Index: lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/dao/hibernate/AssessmentResultDAOHibernate.java
===================================================================
diff -u -ra78be3f1e9a9f6b7b69d12d63ca3a14f3c80b931 -r14ed9cf65b0eb96782a182a99dcc179d5db74986
--- lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/dao/hibernate/AssessmentResultDAOHibernate.java	(.../AssessmentResultDAOHibernate.java)	(revision a78be3f1e9a9f6b7b69d12d63ca3a14f3c80b931)
+++ lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/dao/hibernate/AssessmentResultDAOHibernate.java	(.../AssessmentResultDAOHibernate.java)	(revision 14ed9cf65b0eb96782a182a99dcc179d5db74986)
@@ -134,7 +134,9 @@
 	Query q = getSession().createQuery(LAST_ASSESSMENT_RESULT_GRADE);
 	q.setParameter(0, userId);
 	q.setParameter(1, assessmentUid);
-	return ((Float) q.uniqueResult());
+	Object lastTotalScore = q.uniqueResult();
+	
+	return (lastTotalScore == null) ? 0 : (Float)lastTotalScore;
     }
 
     @Override