Index: lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/util/AssessmentEscapeUtils.java
===================================================================
diff -u -r0dc158981713b0ab875102e364bd7c4a3a0e2235 -r7089187749475a10fc520379a3b4689077139d32
--- lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/util/AssessmentEscapeUtils.java	(.../AssessmentEscapeUtils.java)	(revision 0dc158981713b0ab875102e364bd7c4a3a0e2235)
+++ lams_tool_assessment/src/java/org/lamsfoundation/lams/tool/assessment/util/AssessmentEscapeUtils.java	(.../AssessmentEscapeUtils.java)	(revision 7089187749475a10fc520379a3b4689077139d32)
@@ -26,6 +26,7 @@
 import java.util.Set;
 
 import org.apache.commons.lang.StringEscapeUtils;
+import org.apache.commons.lang.StringUtils;
 import org.lamsfoundation.lams.qb.model.QbOption;
 import org.lamsfoundation.lams.qb.model.QbQuestion;
 import org.lamsfoundation.lams.tool.assessment.dto.AssessmentResultDTO;
@@ -161,7 +162,8 @@
 		case QbQuestion.TYPE_NUMERICAL:
 		case QbQuestion.TYPE_VERY_SHORT_ANSWERS:
 		case QbQuestion.TYPE_ESSAY:
-		    responseStr.append(questionResult.getAnswer());
+		    responseStr
+			    .append(StringUtils.isBlank(questionResult.getAnswer()) ? "-" : questionResult.getAnswer());
 		    break;
 
 		case QbQuestion.TYPE_ORDERING: