diff --git a/src/main/java/rife/bld/extension/propertyfile/Entry.java b/src/main/java/rife/bld/extension/propertyfile/Entry.java
index 379255c..9e8009a 100644
--- a/src/main/java/rife/bld/extension/propertyfile/Entry.java
+++ b/src/main/java/rife/bld/extension/propertyfile/Entry.java
@@ -25,62 +25,59 @@ import java.util.function.BiFunction;
  * @author <a href="https://github.com/gbevin">Geert Bevin</a>
  * @since 1.0
  */
-public class Entry extends EntryBase {
+public class Entry extends EntryBase<Entry> {
+    private String modifyValue_ = "";
+    private BiFunction<String, String, String> modify_;
+
     /**
-     * Instantiates a new Entry.
+     * Creates a new {@link Entry entry}.
      *
-     * @param key the key
+     * @param key the required property key
      */
     public Entry(String key) {
         super(key);
     }
 
     /**
-     * <p>Sets the initial value to set the {@link java.util.Properties property} to, if not already defined.</p>
+     * Returns the modify function.
      *
-     * @param defaultValue the default value
-     * @return the entry
+     * @return the modify function
      */
-    @SuppressWarnings("unused")
-    public Entry defaultValue(Object defaultValue) {
-        setDefaultValue(defaultValue);
-        return this;
+    protected BiFunction<String, String, String> modify() {
+        return modify_;
     }
 
     /**
-     * Sets the {@link Entry entry} up for deletion.
+     * Sets the modify function.
      *
-     * @return the entry
-     */
-    public Entry delete() {
-        setDelete();
-        return this;
-    }
-
-    /**
-     * Creates a new {@link Entry entry}.
-     *
-     * @param modify the modification function
-     * @return the entry
+     * @param modify the modify function
      */
     public Entry modify(BiFunction<String, String, String> modify) {
-        setModify(modify);
+        modify_ = modify;
         return this;
     }
 
     /**
-     * Creates a new {@link Entry entry}.
+     * Sets the modify function.
      *
      * @param value  the value to perform a modification with
-     * @param modify the modification function
-     * @return the entry
+     * @param modify the modify function
      */
     public Entry modify(String value, BiFunction<String, String, String> modify) {
-        setModifyValue(value);
-        setModify(modify);
+        modifyValue_ = value;
+        modify_ = modify;
         return this;
     }
 
+    /**
+     * Returns the value to be used in the {@link #modify_} function.
+     *
+     * @return the modify value
+     */
+    protected String modifyValue() {
+        return modifyValue_;
+    }
+
     /**
      * Sets the new {@link java.util.Properties property} value.
      *
@@ -88,7 +85,7 @@ public class Entry extends EntryBase {
      * @return the entry
      */
     public Entry set(Object s) {
-        setNewValue(s);
+        newValue(s);
         return this;
     }
 }
diff --git a/src/main/java/rife/bld/extension/propertyfile/EntryBase.java b/src/main/java/rife/bld/extension/propertyfile/EntryBase.java
index b724ed3..ca193b1 100644
--- a/src/main/java/rife/bld/extension/propertyfile/EntryBase.java
+++ b/src/main/java/rife/bld/extension/propertyfile/EntryBase.java
@@ -16,7 +16,6 @@
 
 package rife.bld.extension.propertyfile;
 
-import java.util.function.BiFunction;
 import java.util.function.IntFunction;
 
 /**
@@ -26,17 +25,14 @@ import java.util.function.IntFunction;
  * @author <a href="https://github.com/gbevin">Geert Bevin</a>
  * @since 1.0
  */
-@SuppressWarnings("PMD.DataClass")
-public class EntryBase {
+@SuppressWarnings({"unchecked", "PMD.AbstractClassWithoutAbstractMethod"})
+public abstract class EntryBase<T> {
     private IntFunction<Integer> calc_;
     private Object defaultValue_;
     private boolean isDelete_;
     private String key_;
-    private String modifyValue_ = "";
-    private BiFunction<String, String, String> modify_;
     private Object newValue_;
-    private String pattern_ = "";
-    private EntryDate.Units unit_ = EntryDate.Units.DAY;
+    private Object pattern_;
 
     /**
      * Creates a new {@link EntryBase entry}.
@@ -52,71 +48,45 @@ public class EntryBase {
      *
      * @return the calc function
      */
-    protected IntFunction<Integer> getCalc() {
+    protected IntFunction<Integer> calc() {
         return calc_;
     }
 
+    /**
+     * Sets the calculation function.
+     *
+     * @param calc the calc function
+     */
+    public T calc(IntFunction<Integer> calc) {
+        calc_ = calc;
+        return (T) this;
+    }
+
     /**
      * Returns the default value.
      *
      * @return the default value
      */
-    protected Object getDefaultValue() {
+    protected Object defaultValue() {
         return defaultValue_;
     }
 
     /**
-     * Returns the key of the {@link java.util.Properties property}.
+     * Sets the initial value to set the {@link java.util.Properties property} to, if not already defined.
      *
-     * @return the key
+     * @param defaultValue the default value
      */
-    protected String getKey() {
-        return key_;
+    public T defaultValue(Object defaultValue) {
+        defaultValue_ = defaultValue;
+        return (T) this;
     }
 
     /**
-     * Returns the modify function.
-     *
-     * @return the modify function
+     * Indicates that the {@link java.util.Properties property} is to be deleted.
      */
-    protected BiFunction<String, String, String> getModify() {
-        return modify_;
-    }
-
-    /**
-     * Returns the value to be used in the {@link #modify_} function.
-     *
-     * @return the modify value
-     */
-    protected String getModifyValue() {
-        return modifyValue_;
-    }
-
-    /**
-     * Returns the new value to set the {@link java.util.Properties property)} to.
-     *
-     * @return the new value
-     */
-    public Object getNewValue() {
-        return newValue_;
-    }
-
-    /**
-     * Returns the pattern.
-     *
-     * @return the pattern
-     */
-    protected String getPattern() {
-        return pattern_;
-    }
-
-    /**
-     * Returns the {@link EntryDate.Units unit}.
-     *
-     * @return the unit
-     */
-    protected EntryDate.Units getUnit() {
-        return unit_;
+    public T delete() {
+        isDelete_ = true;
+        return (T) this;
     }
 
     /**
@@ -128,79 +98,33 @@ public class EntryBase {
         return isDelete_;
     }
 
+    /**
+     * Returns the key of the {@link java.util.Properties property}.
+     *
+     * @return the key
+     */
+    protected String key() {
+        return key_;
+    }
+
     /**
      * Sets the key of the {@link java.util.Properties property}.
      *
      * @param key the {@link java.util.Properties property} key
      * @return this instance
      */
-    @SuppressWarnings("unused")
-    public EntryBase key(String key) {
+    public T key(String key) {
         key_ = key;
-        return this;
+        return (T) this;
     }
 
     /**
-     * Sets the calculation function.
+     * Returns the new value to set the {@link java.util.Properties property)} to.
      *
-     * @param calc the calc function
+     * @return the new value
      */
-    protected void setCalc(IntFunction<Integer> calc) {
-        calc_ = calc;
-    }
-
-    /**
-     * Sets the initial value to set the {@link java.util.Properties property} to, if not already defined.
-     *
-     * @param defaultValue the default value
-     */
-    protected void setDefaultValue(Object defaultValue) {
-        defaultValue_ = defaultValue;
-    }
-
-    /**
-     * Sets the {@link java.util.Properties property} to be deleted.
-     */
-    protected void setDelete() {
-        isDelete_ = true;
-    }
-
-    /**
-     * Sets the key of the {@link java.util.Properties property}.
-     *
-     * @param key the {@link java.util.Properties property} key
-     */
-    protected void setKey(String key) {
-        key_ = key;
-    }
-
-    /**
-     * Sets the modify function.
-     *
-     * @param modify the modify function
-     */
-    protected void setModify(BiFunction<String, String, String> modify) {
-        modify_ = modify;
-    }
-
-    /**
-     * Sets the modify function.
-     *
-     * @param value  the value to perform a modification with
-     * @param modify the modify function
-     */
-    protected void setModify(String value, BiFunction<String, String, String> modify) {
-        modifyValue_ = value;
-        modify_ = modify;
-    }
-
-    /**
-     * Sets the modify value.
-     *
-     * @param value the modify value.
-     */
-    protected void setModifyValue(String value) {
-        modifyValue_ = value;
+    protected Object newValue() {
+        return newValue_;
     }
 
     /**
@@ -208,26 +132,26 @@ public class EntryBase {
      *
      * @param newValue the new value
      */
-    public void setNewValue(Object newValue) {
+    protected void newValue(Object newValue) {
         newValue_ = newValue;
     }
 
     /**
-     * Sets the {@link java.text.DecimalFormat DecimalFormat} or {@link java.time.format.DateTimeFormatter DateTimeFormatter}
-     * pattern to be used with {@link EntryDate} or {@link EntryInt} respectively.
+     * Returns the pattern.
      *
-     * @param pattern the pattern
+     * @return the pattern
      */
-    protected void setPattern(String pattern) {
-        pattern_ = pattern;
+    protected Object pattern() {
+        return pattern_;
     }
 
     /**
-     * Sets the {@link EntryDate.Units unit} value to apply to calculations.
+     * Sets the {@link java.util.Formatter} pattern.
      *
-     * @param unit the {@link EntryDate.Units unit}
+     * @param pattern the pattern
      */
-    protected void setUnit(EntryDate.Units unit) {
-        unit_ = unit;
+    public T pattern(Object pattern) {
+        pattern_ = pattern;
+        return (T) this;
     }
 }
diff --git a/src/main/java/rife/bld/extension/propertyfile/EntryDate.java b/src/main/java/rife/bld/extension/propertyfile/EntryDate.java
index a25b0e1..0a93745 100644
--- a/src/main/java/rife/bld/extension/propertyfile/EntryDate.java
+++ b/src/main/java/rife/bld/extension/propertyfile/EntryDate.java
@@ -19,7 +19,6 @@ package rife.bld.extension.propertyfile;
 import java.time.*;
 import java.util.Calendar;
 import java.util.Date;
-import java.util.function.IntFunction;
 
 /**
  * Declares the modifications to be made to a {@link java.util.Properties Date-based property}.
@@ -27,9 +26,11 @@ import java.util.function.IntFunction;
  * @author <a href="https://erik.thauvin.net/">Erik C. Thauvin</a>
  * @since 1.0
  */
-public class EntryDate extends EntryBase {
+public class EntryDate extends EntryBase<EntryDate> {
+    private EntryDate.Units unit_ = EntryDate.Units.DAY;
+
     /**
-     * Creates a new date {@link Entry entry}.
+     * Creates a new {@link EntryDate entry}.
      *
      * @param key the required property key
      */
@@ -37,46 +38,13 @@ public class EntryDate extends EntryBase {
         super(key);
     }
 
-    /**
-     * Creates a new {@link EntryDate entry}.
-     *
-     * @param calc the calculation function
-     * @return this instance
-     */
-    public EntryDate calc(IntFunction<Integer> calc) {
-        setCalc(calc);
-        return this;
-    }
-
-    /**
-     * Sets the {@link EntryDate entry} up for deletion.
-     *
-     * @return this instance
-     */
-    public EntryDate delete() {
-        setDelete();
-        return this;
-    }
-
     /**
      * Sets the new {@link java.util.Properties property} value to now.
      *
      * @return this instance
      */
     public EntryDate now() {
-        setNewValue("now");
-        return this;
-    }
-
-    /**
-     * Sets the pattern for {@link EntryInt} and {@link EntryDate} to{@link java.text.DecimalFormat DecimalFormat} and
-     * {@link java.time.format.DateTimeFormatter DateTimeFormatter} respectively.
-     *
-     * @param pattern the pattern
-     * @return this instance
-     */
-    public EntryDate pattern(String pattern) {
-        setPattern(pattern);
+        newValue("now");
         return this;
     }
 
@@ -87,7 +55,7 @@ public class EntryDate extends EntryBase {
      * @return this instance
      */
     public EntryDate set(Instant instant) {
-        setNewValue(instant);
+        newValue(instant);
         return this;
     }
 
@@ -98,7 +66,7 @@ public class EntryDate extends EntryBase {
      * @return this instance
      */
     public EntryDate set(LocalDate date) {
-        setNewValue(date);
+        newValue(date);
         return this;
     }
 
@@ -109,7 +77,7 @@ public class EntryDate extends EntryBase {
      * @return this instance
      */
     public EntryDate set(LocalDateTime date) {
-        setNewValue(date);
+        newValue(date);
         return this;
     }
 
@@ -120,7 +88,7 @@ public class EntryDate extends EntryBase {
      * @return this instance
      */
     public EntryDate set(ZonedDateTime date) {
-        setNewValue(date);
+        newValue(date);
         return this;
     }
 
@@ -131,7 +99,7 @@ public class EntryDate extends EntryBase {
      * @return this instance
      */
     public EntryDate set(LocalTime time) {
-        setNewValue(time);
+        newValue(time);
         return this;
     }
 
@@ -142,7 +110,7 @@ public class EntryDate extends EntryBase {
      * @return this instance
      */
     public EntryDate set(Calendar cal) {
-        setNewValue(cal);
+        newValue(cal);
         return this;
     }
 
@@ -153,10 +121,19 @@ public class EntryDate extends EntryBase {
      * @return this instance
      */
     public EntryDate set(Date date) {
-        setNewValue(date);
+        newValue(date);
         return this;
     }
 
+    /**
+     * Returns the {@link EntryDate.Units unit}.
+     *
+     * @return the unit
+     */
+    public EntryDate.Units unit() {
+        return unit_;
+    }
+
     /**
      * Sets the {@link Units unit} value to apply to calculations for {@link EntryDate}.
      *
@@ -164,7 +141,17 @@ public class EntryDate extends EntryBase {
      * @return this instance
      */
     public EntryDate unit(Units unit) {
-        setUnit(unit);
+        unit_ = unit;
+        return this;
+    }
+
+    /**
+     * Sets the {@link java.time.format.DateTimeFormatter DateTimeFormatter} pattern.
+     *
+     * @param pattern the pattern
+     */
+    public EntryDate pattern(String pattern) {
+        super.pattern(pattern);
         return this;
     }
 
diff --git a/src/main/java/rife/bld/extension/propertyfile/EntryInt.java b/src/main/java/rife/bld/extension/propertyfile/EntryInt.java
index 54226f4..896bbf1 100644
--- a/src/main/java/rife/bld/extension/propertyfile/EntryInt.java
+++ b/src/main/java/rife/bld/extension/propertyfile/EntryInt.java
@@ -16,17 +16,15 @@
 
 package rife.bld.extension.propertyfile;
 
-import java.util.function.IntFunction;
-
 /**
  * Declares the modifications to be made to an {@link java.util.Properties Integer-based property}.
  *
  * @author <a href="https://erik.thauvin.net/">Erik C. Thauvin</a>
  * @since 1.0
  */
-public class EntryInt extends EntryBase {
+public class EntryInt extends EntryBase<EntryInt> {
     /**
-     * Creates a new date {@link Entry entry}.
+     * Creates a new {@link EntryInt entry}.
      *
      * @param key the required property key
      */
@@ -34,39 +32,6 @@ public class EntryInt extends EntryBase {
         super(key);
     }
 
-    /**
-     * Creates a new {@link EntryInt entry}.
-     *
-     * @param calc the calculation function.
-     * @return this instance
-     */
-    public EntryInt calc(IntFunction<Integer> calc) {
-        setCalc(calc);
-        return this;
-    }
-
-    /**
-     * Sets the initial value to set the {@link java.util.Properties property} to, if not already defined.
-     *
-     * @param defaultValue the default value
-     * @return this instance
-     */
-    @SuppressWarnings("unused")
-    public EntryInt defaultValue(Object defaultValue) {
-        setDefaultValue(defaultValue);
-        return this;
-    }
-
-    /**
-     * Sets the {@link EntryInt entry} up for deletion.
-     *
-     * @return this instance
-     */
-    public EntryInt delete() {
-        setDelete();
-        return this;
-    }
-
     /**
      * Sets the new {@link java.util.Properties property} value to an integer.
      *
@@ -74,7 +39,17 @@ public class EntryInt extends EntryBase {
      * @return this instance
      */
     public EntryInt set(int i) {
-        setNewValue(i);
+        newValue(i);
+        return this;
+    }
+
+    /**
+     * Sets the {@link java.text.DecimalFormat DecimalFormat} pattern.
+     *
+     * @param pattern the pattern
+     */
+    public EntryInt pattern(String pattern) {
+        super.pattern(pattern);
         return this;
     }
 }
diff --git a/src/main/java/rife/bld/extension/propertyfile/PropertyFileOperation.java b/src/main/java/rife/bld/extension/propertyfile/PropertyFileOperation.java
index 0ecf5d7..c86204e 100644
--- a/src/main/java/rife/bld/extension/propertyfile/PropertyFileOperation.java
+++ b/src/main/java/rife/bld/extension/propertyfile/PropertyFileOperation.java
@@ -18,11 +18,14 @@ package rife.bld.extension.propertyfile;
 
 import rife.bld.BaseProject;
 import rife.bld.operations.AbstractOperation;
+import rife.bld.operations.exceptions.ExitStatusException;
 
 import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Properties;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 
 /**
  * Creates or applies edits to a {@link Properties Properties} file.
@@ -31,7 +34,8 @@ import java.util.Properties;
  * @since 1.0
  */
 public class PropertyFileOperation extends AbstractOperation<PropertyFileOperation> {
-    private final List<EntryBase> entries_ = new ArrayList<>();
+    private final static Logger LOGGER = Logger.getLogger(PropertyFileOperation.class.getName());
+    private final List<EntryBase<?>> entries_ = new ArrayList<>();
     private String comment_ = "";
     private boolean failOnWarning_;
     private File file_;
@@ -55,8 +59,7 @@ public class PropertyFileOperation extends AbstractOperation<PropertyFileOperati
      * @param entry the {@link Entry entry}
      * @return this instance
      */
-    @SuppressWarnings("unused")
-    public PropertyFileOperation entry(EntryBase entry) {
+    public PropertyFileOperation entry(EntryBase<?> entry) {
         entries_.add(entry);
         return this;
     }
@@ -66,38 +69,49 @@ public class PropertyFileOperation extends AbstractOperation<PropertyFileOperati
      */
     @Override
     public void execute() throws Exception {
+        if (project_ == null) {
+            if (LOGGER.isLoggable(Level.SEVERE) && !silent()) {
+                LOGGER.log(Level.SEVERE, "A project is required");
+            }
+            throw new ExitStatusException(ExitStatusException.EXIT_FAILURE);
+        }
+
         var commandName = project_.getCurrentCommandName();
         var properties = new Properties();
-        var success = false;
+        var success = true;
 
         if (file_ == null) {
-            PropertyFileUtils.warn(commandName, "A properties file must be specified.");
+            warn(commandName, "A properties file must be specified.");
         } else {
-            success = PropertyFileUtils.loadProperties(commandName, file_, properties);
+            success = PropertyFileUtils.loadProperties(commandName, file_, properties, silent());
         }
 
         if (success) {
             for (var entry : entries_) {
-                if (entry.getKey().isBlank()) {
-                    PropertyFileUtils.warn(commandName, "An entry key must specified.");
+                if (entry.key().isBlank()) {
+                    warn(commandName, "An entry key must specified.");
                 } else {
-                    var key = entry.getKey();
-                    Object value = entry.getNewValue();
-                    Object defaultValue = entry.getDefaultValue();
+                    var key = entry.key();
+                    Object value = entry.newValue();
+                    Object defaultValue = entry.defaultValue();
                     var p = properties.getProperty(key);
                     if (entry.isDelete()) {
                         properties.remove(key);
                     } else if ((value == null || String.valueOf(value).isBlank())
                             && (defaultValue == null || String.valueOf(defaultValue).isBlank())
                             && (p == null || p.isBlank())) {
-                        PropertyFileUtils.warn(commandName, "An entry must be set or have a default value: " + key);
+                        warn(commandName, "An entry must be set or have a default value: " + key);
                     } else {
-                        if (entry instanceof EntryDate) {
-                            success = PropertyFileUtils.processDate(commandName, properties, (EntryDate) entry, failOnWarning_);
-                        } else if (entry instanceof EntryInt) {
-                            success = PropertyFileUtils.processInt(commandName, properties, (EntryInt) entry, failOnWarning_);
-                        } else {
-                            success = PropertyFileUtils.processString(properties, (Entry) entry);
+                        try {
+                            if (entry instanceof EntryDate) {
+                                PropertyFileUtils.processDate(properties, (EntryDate) entry);
+                            } else if (entry instanceof EntryInt) {
+                                PropertyFileUtils.processInt(properties, (EntryInt) entry);
+                            } else {
+                                PropertyFileUtils.processString(properties, (Entry) entry);
+                            }
+                        } catch (IllegalArgumentException e) {
+                            warn(commandName, e.getMessage());
                         }
                     }
                 }
@@ -152,4 +166,24 @@ public class PropertyFileOperation extends AbstractOperation<PropertyFileOperati
         project_ = project;
         return this;
     }
+
+    /**
+     * Logs a warning.
+     *
+     * @param command The command name
+     * @param message the message log
+     * @throws ExitStatusException if a {@link Level#SEVERE} exception occurs
+     */
+    private void warn(String command, String message) throws ExitStatusException {
+        if (failOnWarning_) {
+            if (LOGGER.isLoggable(Level.SEVERE) && !silent()) {
+                LOGGER.log(Level.SEVERE, '[' + command + "] " + message);
+                throw new ExitStatusException(ExitStatusException.EXIT_FAILURE);
+            }
+        } else {
+            if (LOGGER.isLoggable(Level.WARNING) && !silent()) {
+                LOGGER.warning('[' + command + "] " + message);
+            }
+        }
+    }
 }
diff --git a/src/main/java/rife/bld/extension/propertyfile/PropertyFileUtils.java b/src/main/java/rife/bld/extension/propertyfile/PropertyFileUtils.java
index 8e1c774..6e6d513 100644
--- a/src/main/java/rife/bld/extension/propertyfile/PropertyFileUtils.java
+++ b/src/main/java/rife/bld/extension/propertyfile/PropertyFileUtils.java
@@ -16,7 +16,8 @@
 
 package rife.bld.extension.propertyfile;
 
-import javax.imageio.IIOException;
+import rife.bld.operations.exceptions.ExitStatusException;
+
 import java.io.File;
 import java.io.IOException;
 import java.nio.file.Files;
@@ -69,22 +70,22 @@ public final class PropertyFileUtils {
      * @param file    the file location
      * @param p       the {@link Properties properties} to load into.
      * @return the boolean
-     * @throws Exception the exception
+     * @throws ExitStatusException if an error occurred
      */
-    @SuppressWarnings("PMD.SignatureDeclareThrowsException")
-    public static boolean loadProperties(String command, File file, Properties p) throws Exception {
+    public static boolean loadProperties(String command, File file, Properties p, boolean silent)
+            throws ExitStatusException {
         boolean success = true;
         if (file != null) {
             if (file.exists()) {
                 try (var propStream = Files.newInputStream(file.toPath(), StandardOpenOption.READ)) {
                     p.load(propStream);
                 } catch (IOException ioe) {
-                    warn(command, "Could not load properties file: " + ioe.getMessage(), ioe, true);
+                    warn(command, "Could not load properties file: " + ioe.getMessage(), true, silent);
                     success = false;
                 }
             }
         } else {
-            warn(command, "Please specify the properties file location.");
+            warn(command, "Please specify the properties file location.", true, silent);
             success = false;
         }
         return success;
@@ -261,20 +262,8 @@ public final class PropertyFileUtils {
     public static void saveProperties(File file, String comment, Properties p) throws IOException {
         try (var output = Files.newOutputStream(file.toPath())) {
             p.store(output, comment);
-        } catch (IIOException ioe) {
-            throw new IIOException("An IO error occurred while saving the Properties file: " + file, ioe);
-        }
-    }
-
-    /**
-     * Logs a warning.
-     *
-     * @param command the issuing command
-     * @param message the message to log
-     */
-    static void warn(String command, String message) {
-        if (LOGGER.isLoggable(Level.WARNING)) {
-            LOGGER.warning('[' + command + "] " + message);
+        } catch (IOException ioe) {
+            throw new IOException("An IO error occurred while saving the Properties file: " + file, ioe);
         }
     }
 
@@ -283,18 +272,20 @@ public final class PropertyFileUtils {
      *
      * @param command       The command name
      * @param message       the message log
-     * @param e             the related exception
      * @param failOnWarning logs and throws exception if set to {@code true}
-     * @throws Exception the exception
+     * @throws ExitStatusException if a {@link Level#SEVERE} exception occurs
      */
-    @SuppressWarnings({"PMD.SignatureDeclareThrowsException"})
-    static void warn(String command, String message, Exception e, boolean failOnWarning) throws Exception {
-        LOGGER.warning("ahah");
+    static void warn(String command, String message, boolean failOnWarning, boolean silent)
+            throws ExitStatusException {
         if (failOnWarning) {
-            LOGGER.log(Level.SEVERE, '[' + command + "] " + message, e);
-            throw e;
+            if (LOGGER.isLoggable(Level.SEVERE) && !silent) {
+                LOGGER.log(Level.SEVERE, '[' + command + "] " + message);
+            }
+            throw new ExitStatusException(ExitStatusException.EXIT_FAILURE);
         } else {
-            warn(command, message);
+            if (LOGGER.isLoggable(Level.WARNING) && !silent) {
+                LOGGER.warning('[' + command + "] " + message);
+            }
         }
     }
 }
diff --git a/src/test/java/rife/bld/extension/propertyfile/PropertyFileOperationTest.java b/src/test/java/rife/bld/extension/propertyfile/PropertyFileOperationTest.java
index 22dc242..6314fbc 100644
--- a/src/test/java/rife/bld/extension/propertyfile/PropertyFileOperationTest.java
+++ b/src/test/java/rife/bld/extension/propertyfile/PropertyFileOperationTest.java
@@ -18,6 +18,7 @@ package rife.bld.extension.propertyfile;
 
 import org.junit.jupiter.api.Test;
 import rife.bld.Project;
+import rife.bld.operations.exceptions.ExitStatusException;
 
 import java.io.File;
 import java.nio.file.Files;
@@ -26,6 +27,7 @@ import java.time.format.DateTimeFormatter;
 import java.util.Properties;
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatCode;
 import static rife.bld.extension.propertyfile.Calc.ADD;
 
 class PropertyFileOperationTest {
@@ -76,4 +78,10 @@ class PropertyFileOperationTest {
         assertThat(p.getProperty("build.date")).as("dalete build.date").isNull();
         assertThat(p).as("version keys").containsKeys("version.major", "version.minor", "version.patch");
     }
+
+    @Test
+    void testExecuteNoProject() {
+        var op = new PropertyFileOperation();
+        assertThatCode(op::execute).isInstanceOf(ExitStatusException.class);
+    }
 }