Index: lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/dao/hibernate/AssessmentUserDAOHibernate.java
===================================================================
diff -u -r58769dd8bdda0dd07bbb90508b319c58b513c9aa -r13272ebab73702a7219def52a228bf67a0a92726
--- lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/dao/hibernate/AssessmentUserDAOHibernate.java	(.../AssessmentUserDAOHibernate.java)	(revision 58769dd8bdda0dd07bbb90508b319c58b513c9aa)
+++ lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/dao/hibernate/AssessmentUserDAOHibernate.java	(.../AssessmentUserDAOHibernate.java)	(revision 13272ebab73702a7219def52a228bf67a0a92726)
@@ -176,7 +176,7 @@
 		Long questionResultUid = ((Number) element[0]).longValue();
 		String firstName = (String) element[1];
 		String lastName = (String) element[2];
-		float grade = ((Number) element[3]).floatValue();
+		float grade = element[3] == null ? 0 : ((Number) element[3]).floatValue();
 
 		AssessmentUserDTO userDto = new AssessmentUserDTO();
 		userDto.setQuestionResultUid(questionResultUid);;