diff --git a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/ComponentManager.java b/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/ComponentManager.java
index 7da5556ee..e8dc4fd15 100644
--- a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/ComponentManager.java
+++ b/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/ComponentManager.java
@@ -614,8 +614,7 @@ public class ComponentManager implements ComponentService {
             e.setLocation(location, false);
             throw e;
         } catch (RuntimeException e) {
-            throw new ExecutionException(e.getClass().getName() + ": "
-                 + e.getMessage(), e, location);
+            throw new ExecutionException(e, location);
         }
     }
 
@@ -662,8 +661,7 @@ public class ComponentManager implements ComponentService {
             e.setLocation(model.getLocation(), false);
             throw e;
         } catch (RuntimeException e) {
-            throw new ExecutionException(e.getClass().getName() + ": "
-                 + e.getMessage(), e, model.getLocation());
+            throw new ExecutionException(e, model.getLocation());
         }
     }
 
@@ -786,8 +784,7 @@ public class ComponentManager implements ComponentService {
             e.setLocation(model.getLocation(), false);
             throw e;
         } catch (RuntimeException e) {
-            throw new ExecutionException(e.getClass().getName() + ": "
-                 + e.getMessage(), e, model.getLocation());
+            throw new ExecutionException(e, model.getLocation());
         }
     }
 
diff --git a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/CoreExecService.java b/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/CoreExecService.java
index 7bd4009b3..276b47743 100644
--- a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/CoreExecService.java
+++ b/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/CoreExecService.java
@@ -118,10 +118,12 @@ public class CoreExecService implements ExecService {
 
             task.execute();
             LoaderUtils.setContextLoader(currentLoader);
+        } catch (ExecutionException e) {
+            failureCause = e;
+            throw e;
         } catch (Throwable e) {
             ExecutionException ee =
-                new ExecutionException(e.getClass().getName() + ": "
-                 + e.getMessage(), e);
+                new ExecutionException(e);
 
             failureCause = ee;
             throw ee;
diff --git a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/Frame.java b/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/Frame.java
index 0bc3f06d8..7efef0ff0 100644
--- a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/Frame.java
+++ b/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/Frame.java
@@ -72,7 +72,6 @@ import org.apache.ant.common.service.EventService;
 import org.apache.ant.common.service.ExecService;
 import org.apache.ant.common.service.FileService;
 import org.apache.ant.common.service.MagicProperties;
-import org.apache.ant.common.util.AntException;
 import org.apache.ant.common.util.ConfigException;
 import org.apache.ant.common.util.DemuxOutputReceiver;
 import org.apache.ant.common.util.ExecutionException;
@@ -696,16 +695,12 @@ public class Frame implements DemuxOutputReceiver {
                         setDataValue(typeId, component, true);
                     }
                 }
-            } catch (AntException te) {
-                ExecutionException e
-                     = new ExecutionException(te, te.getLocation());
-
+            } catch (ExecutionException e) {
                 e.setLocation(model.getLocation(), false);
                 throw e;
             } catch (RuntimeException e) {
                 ExecutionException ee =
-                    new ExecutionException(e.getClass().getName() + ": "
-                     + e.getMessage(), e, model.getLocation());
+                    new ExecutionException(e, model.getLocation());
 
                 throw ee;
             }
@@ -755,8 +750,7 @@ public class Frame implements DemuxOutputReceiver {
             throw e;
         } catch (RuntimeException e) {
             ExecutionException ee =
-                new ExecutionException(e.getClass().getName() + ": "
-                 + e.getMessage(), e, target.getLocation());
+                new ExecutionException(e, target.getLocation());
 
             failureCause = ee;
             throw ee;
diff --git a/proposal/mutant/src/java/cli/org/apache/ant/cli/DefaultLogger.java b/proposal/mutant/src/java/cli/org/apache/ant/cli/DefaultLogger.java
index 3fd74f414..d0b25f154 100755
--- a/proposal/mutant/src/java/cli/org/apache/ant/cli/DefaultLogger.java
+++ b/proposal/mutant/src/java/cli/org/apache/ant/cli/DefaultLogger.java
@@ -174,7 +174,7 @@ public class DefaultLogger implements BuildLogger {
                 t.printStackTrace(out);
             }
 
-            if (cause != null) {
+            if (!cause.getMessage().equals(t.getMessage())) {
                 out.println("Root cause: " + cause.toString());
             }
         } else {
diff --git a/proposal/mutant/src/java/common/org/apache/ant/common/util/AntException.java b/proposal/mutant/src/java/common/org/apache/ant/common/util/AntException.java
index 3d7ba6bf9..7ae63c48f 100755
--- a/proposal/mutant/src/java/common/org/apache/ant/common/util/AntException.java
+++ b/proposal/mutant/src/java/common/org/apache/ant/common/util/AntException.java
@@ -114,7 +114,8 @@ public abstract class AntException extends Exception {
      * @param cause Exception that might have caused this one.
      */
     public AntException(Throwable cause) {
-        super(cause.getMessage());
+        super(cause.getMessage() == null 
+                ? cause.getClass().getName() : cause.getMessage());
         this.cause = cause;
     }