diff --git a/src/main/java/rife/bld/extension/CompileKotlinOperation.java b/src/main/java/rife/bld/extension/CompileKotlinOperation.java
index e3aa20c..beb8582 100644
--- a/src/main/java/rife/bld/extension/CompileKotlinOperation.java
+++ b/src/main/java/rife/bld/extension/CompileKotlinOperation.java
@@ -47,7 +47,7 @@ public class CompileKotlinOperation extends AbstractOperation<CompileKotlinOpera
     private File buildTestDirectory_;
     private CompileKotlinOptions compileOptions_;
     private KaptOptions kaptOptions_;
-    private File kotlinLibsDirectory_;
+    private BaseProject project_;
 
     /**
      * Returns the list JARs contained in a given directory.
@@ -208,6 +208,10 @@ public class CompileKotlinOperation extends AbstractOperation<CompileKotlinOpera
     @SuppressWarnings("PMD.SystemPrintln")
     public void execute()
             throws IOException {
+        if (project_ == null) {
+            throw new IllegalArgumentException("A project must be specified.");
+        }
+
         executeCreateBuildDirectories();
         executeBuildMainSources();
         executeBuildTestSources();
@@ -236,7 +240,8 @@ public class CompileKotlinOperation extends AbstractOperation<CompileKotlinOpera
      * @param destination the destination directory
      * @param friendPaths the output directory for friendly modules
      */
-    protected void executeBuildSources(Collection<String> classpath, Collection<File> sources, File destination, File friendPaths)
+    protected void executeBuildSources(Collection<String> classpath, Collection<File> sources, File destination,
+                                       File friendPaths)
             throws IOException {
         if (sources.isEmpty() || destination == null) {
             return;
@@ -265,8 +270,8 @@ public class CompileKotlinOperation extends AbstractOperation<CompileKotlinOpera
         }
 
         // kapt plugin & options
-        if (kotlinLibsDirectory_ != null && kaptOptions_ != null) {
-            var kaptJar = getJarList(kotlinLibsDirectory_, "^.*kotlin-annotation-processing.*\\.jar$");
+        if (kaptOptions_ != null) {
+            var kaptJar = getJarList(project_.libBldDirectory(), "^.*kotlin-annotation-processing.*\\.jar$");
             if (kaptJar.size() == 1) {
                 args.add("-Xplugin=" + kaptJar.get(0));
                 kaptOptions_.args().forEach(a -> {
@@ -274,7 +279,8 @@ public class CompileKotlinOperation extends AbstractOperation<CompileKotlinOpera
                     args.add(a);
                 });
             } else if (LOGGER.isLoggable(Level.WARNING)) {
-                LOGGER.warning("Could not locate the Kotlin annotation processing JAR in:" + kotlinLibsDirectory_);
+                LOGGER.warning("Could not locate the Kotlin annotation processing JAR in:" +
+                        project_.libBldDirectory().getAbsolutePath());
             }
         }
 
@@ -316,15 +322,25 @@ public class CompileKotlinOperation extends AbstractOperation<CompileKotlinOpera
 
     /**
      * Configures a compile operation from a {@link BaseProject}.
+     * <p>
+     * Sets the following from the project:
+     * <ul>
+     *     <li>{@link #buildMainDirectory() buildMainDirectory}</li>
+     *     <li>{@link #buildTestDirectory() buildTestDirectory}</li>
+     *     <li>{@link #compileMainClasspath() compileMainClassPath}</li>
+     *     <li>{@link #compileTestClasspath() compilesTestClassPath}</li>
+     *     <li>{@link #mainSourceFiles() mainSourceFiles}</li>
+     *     <li>{@link #testSourceFiles() testSourceFile}</li>
+     * </ul>
      *
      * @param project the project to configure the compile operation from
      */
     public CompileKotlinOperation fromProject(BaseProject project) {
+        project_ = project;
         return buildMainDirectory(project.buildMainDirectory())
                 .buildTestDirectory(project.buildTestDirectory())
                 .compileMainClasspath(project.compileMainClasspath())
                 .compileTestClasspath(project.compileTestClasspath())
-                .kotlinLibsDirectory(project.libBldDirectory())
                 .mainSourceFiles(getKotlinFileList(new File(project.srcMainDirectory(), "kotlin")))
                 .testSourceFiles(getKotlinFileList(new File(project.srcTestDirectory(), "kotlin")));
     }
@@ -340,28 +356,6 @@ public class CompileKotlinOperation extends AbstractOperation<CompileKotlinOpera
         return this;
     }
 
-    /**
-     * Provides the directory containing the Kotlin libraries (compiler, plugins, dokka, etc.) JARs.
-     *
-     * @param directory the directory location
-     * @return this class instance
-     */
-    public CompileKotlinOperation kotlinLibsDirectory(File directory) {
-        kotlinLibsDirectory_ = directory;
-        return this;
-    }
-
-    /**
-     * Provides the directory containing the Kotlin libraries (compiler, plugins, dokka, etc.) JARs.
-     *
-     * @param directory the directory location
-     * @return this class instance
-     */
-    public CompileKotlinOperation kotlinLibsDirectory(String directory) {
-        kotlinLibsDirectory_ = new File(directory);
-        return this;
-    }
-
     /**
      * Provides main source directories that should be compiled.
      *
diff --git a/src/main/java/rife/bld/extension/KaptOptions.java b/src/main/java/rife/bld/extension/KaptOptions.java
index 416ad4a..a468270 100644
--- a/src/main/java/rife/bld/extension/KaptOptions.java
+++ b/src/main/java/rife/bld/extension/KaptOptions.java
@@ -98,6 +98,17 @@ public class KaptOptions {
         return this;
     }
 
+    /**
+     * A path to the annotation processor JAR. Pass as many classpath as the number of JARs that you have.
+     *
+     * @param apClasspath one or more classpath
+     * @return this class instance
+     */
+    public KaptOptions apClasspath(String... apClasspath) {
+        apClasspath_.addAll(List.of(apClasspath));
+        return this;
+    }
+
     /**
      * A list of the annotation processor options.
      *
@@ -181,7 +192,7 @@ public class KaptOptions {
 
         // processors
         if (!processors_.isEmpty()) {
-            processors_.forEach(p -> args.add(PLUGIN_ID + "processors=" + p));
+            args.add(PLUGIN_ID + "processors=" + String.join(",", processors_));
         }
 
         // verbose
@@ -289,6 +300,18 @@ public class KaptOptions {
         return this;
     }
 
+    /**
+     * A list of annotation processor qualified class names. If specified, {@code kapt} does not try to find annotation
+     * processors in {@link #apClasspath}.
+     *
+     * @param processors one or moe qualified class names
+     * @return this class instance
+     */
+    public KaptOptions processors(String... processors) {
+        processors_.addAll(List.of(processors));
+        return this;
+    }
+
     /**
      * Enables verbose output.
      *
diff --git a/src/main/java/rife/bld/extension/dokka/DokkaOperation.java b/src/main/java/rife/bld/extension/dokka/DokkaOperation.java
index b3c7c8d..c226bfd 100644
--- a/src/main/java/rife/bld/extension/dokka/DokkaOperation.java
+++ b/src/main/java/rife/bld/extension/dokka/DokkaOperation.java
@@ -218,6 +218,8 @@ public class DokkaOperation extends AbstractProcessOperation<DokkaOperation> {
 
     /**
      * Configures the operation from a {@link BaseProject}.
+     * <p>
+     * Sets the {@link #sourceSet_ sourceSet} and {@link #moduleName_ moduleName} from the project.
      *
      * @param project the project to configure the operation from
      */
diff --git a/src/test/java/rife/bld/extension/CompileKotlinOperationTest.java b/src/test/java/rife/bld/extension/CompileKotlinOperationTest.java
index bb23cc5..ecdd291 100644
--- a/src/test/java/rife/bld/extension/CompileKotlinOperationTest.java
+++ b/src/test/java/rife/bld/extension/CompileKotlinOperationTest.java
@@ -18,6 +18,7 @@ package rife.bld.extension;
 
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Test;
+import rife.bld.blueprints.BaseProjectBlueprint;
 import rife.tools.FileUtils;
 
 import java.io.File;
@@ -68,6 +69,8 @@ class CompileKotlinOperationTest {
             }
 
             var op = new CompileKotlinOperation()
+                    .fromProject(new BaseProjectBlueprint(new File("examples"), "com.example",
+                            "Example"))
                     .compileOptions(new CompileKotlinOptions().verbose(true))
                     .buildMainDirectory(mainDir)
                     .buildTestDirectory(testDir)