Index: /trunk/autoquest-ui-swt/src/main/java/de/ugoe/cs/autoquest/ui/swt/SWTConsole.java
===================================================================
--- /trunk/autoquest-ui-swt/src/main/java/de/ugoe/cs/autoquest/ui/swt/SWTConsole.java	(revision 1430)
+++ /trunk/autoquest-ui-swt/src/main/java/de/ugoe/cs/autoquest/ui/swt/SWTConsole.java	(revision 1431)
@@ -90,5 +90,11 @@
         MessageBox messageBox = new MessageBox(output.getShell(), SWT.ERROR);
         messageBox.setText("Error");
-        messageBox.setMessage(e.getMessage());
+        
+        if (e.getMessage() != null) {
+            messageBox.setMessage(e.getMessage());
+        }
+        else {
+            messageBox.setMessage("Unexpected exception occurred: " + e);
+        }
         messageBox.open();