Index: lams_tool_mindmap/src/java/org/lamsfoundation/lams/tool/mindmap/web/actions/LearningAction.java
===================================================================
RCS file: /usr/local/cvsroot/lams_tool_mindmap/src/java/org/lamsfoundation/lams/tool/mindmap/web/actions/LearningAction.java,v
diff -u -r1.11 -r1.12
--- lams_tool_mindmap/src/java/org/lamsfoundation/lams/tool/mindmap/web/actions/LearningAction.java	28 Oct 2009 03:04:11 -0000	1.11
+++ lams_tool_mindmap/src/java/org/lamsfoundation/lams/tool/mindmap/web/actions/LearningAction.java	28 Oct 2009 03:04:45 -0000	1.12
@@ -811,7 +811,7 @@
 		    mindmapService.updateEntry(entry);
 		}
 	    } else {
-		if (!mindmap.isMultiUserMode())
+		if (!mindmap.isMultiUserMode() && learningForm.getMindmapContent() != null)
 		    saveMindmapXML(mindmap, mindmapUser, learningForm.getMindmapContent(), mindmapSession);
 	    }