Index: lams_common/src/java/org/lamsfoundation/lams/learningdesign/service/LearningDesignService.java
===================================================================
diff -u -rd0b6f213cba1026b0c9fdbdaa5dd44a49eddd3aa -rb7a74f109f12e9adb43b53c29b472bb73ce8214f
--- lams_common/src/java/org/lamsfoundation/lams/learningdesign/service/LearningDesignService.java	(.../LearningDesignService.java)	(revision d0b6f213cba1026b0c9fdbdaa5dd44a49eddd3aa)
+++ lams_common/src/java/org/lamsfoundation/lams/learningdesign/service/LearningDesignService.java	(.../LearningDesignService.java)	(revision b7a74f109f12e9adb43b53c29b472bb73ce8214f)
@@ -306,9 +306,8 @@
 
     @Override
     public String createBranchingSVG(Long branchingActivityId, int imageFormat) throws IOException {
-	BranchingActivity branchingActivity = (BranchingActivity) activityDAO
-		.getActivityByActivityId(branchingActivityId);
-	Long learningDesignId = branchingActivity.getLearningDesign().getLearningDesignId();
+	Activity activity = activityDAO.getActivityByActivityId(branchingActivityId);
+	Long learningDesignId = activity.getLearningDesign().getLearningDesignId();
 	return createDesignSVG(learningDesignId, branchingActivityId, imageFormat);
     }