diff --git a/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/misc/KobaltExecutors.kt b/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/misc/KobaltExecutors.kt
index eb41ec5b..f35d6835 100644
--- a/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/misc/KobaltExecutors.kt
+++ b/modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/misc/KobaltExecutors.kt
@@ -35,7 +35,7 @@ class KobaltExecutor(name: String, threadCount: Int)
             }
         }
         if (ex != null) {
-            error(ex.toString())
+            error(ex.toString(), ex)
         }
     }
 }