Index: /trunk/autoquest-plugin-uml/src/main/java/de/ugoe/cs/autoquest/plugin/uml/UMLUtils.java
===================================================================
--- /trunk/autoquest-plugin-uml/src/main/java/de/ugoe/cs/autoquest/plugin/uml/UMLUtils.java	(revision 2014)
+++ /trunk/autoquest-plugin-uml/src/main/java/de/ugoe/cs/autoquest/plugin/uml/UMLUtils.java	(revision 2015)
@@ -433,6 +433,10 @@
         int i=0;
         for( List<Event> sequence : sequences ) {
-            interactions.add(interactionCreator.createInteraction(sequence, interactionName+"_"+i));
-            i++;
+            try {
+                interactions.add(interactionCreator.createInteraction(sequence, interactionName+"_"+i));
+                i++;
+            } catch(Exception e) {
+                Console.traceln(Level.SEVERE, "failure for " + interactionName+"_"+i + ": " + e.getMessage());
+            }
         }
         return interactions;