Index: trunk/ippTools/src/dqstatstool.c
===================================================================
--- trunk/ippTools/src/dqstatstool.c	(revision 31792)
+++ trunk/ippTools/src/dqstatstool.c	(revision 31798)
@@ -622,5 +622,10 @@
       }
       else if (!strcmp(colType,"PS_DATA_STRING")) {
-        success = psMetadataAddStr(tableRow,PS_LIST_TAIL,colName,0,"",rowItem->data.str);
+        if (rowItem->data.str) {
+            success = psMetadataAddStr(tableRow,PS_LIST_TAIL,colName,0,"",rowItem->data.str);
+        } else {
+            rowItem->data.str = psStringCopy("NULL");
+            success = psMetadataAddStr(tableRow,PS_LIST_TAIL,colName,0,"",rowItem->data.str);
+        }
       }
       else if (!strcmp(colType,"PS_DATA_TIME")) {