Index: trunk/autoquest-plugin-mfc-test/src/test/java/de/ugoe/cs/autoquest/plugin/mfc/EventGenerationRuleTest.java
===================================================================
--- trunk/autoquest-plugin-mfc-test/src/test/java/de/ugoe/cs/autoquest/plugin/mfc/EventGenerationRuleTest.java	(revision 1425)
+++ trunk/autoquest-plugin-mfc-test/src/test/java/de/ugoe/cs/autoquest/plugin/mfc/EventGenerationRuleTest.java	(revision 2233)
@@ -422,8 +422,10 @@
             Console.printerrln("Invalid rules file.");
             e.printStackTrace();
+            return null;
         }
         catch (IOException e) {
             Console.printerrln("Invalid rules file.");
             e.printStackTrace();
+            return null;
         }