Index: lams_central/src/java/org/lamsfoundation/lams/web/PortraitSaveAction.java
===================================================================
diff -u -r43ec109ac986fb54b39042c1601915fcf0b590d9 -rf8e00c422047b4cfc062f1a73671895c480f98c2
--- lams_central/src/java/org/lamsfoundation/lams/web/PortraitSaveAction.java	(.../PortraitSaveAction.java)	(revision 43ec109ac986fb54b39042c1601915fcf0b590d9)
+++ lams_central/src/java/org/lamsfoundation/lams/web/PortraitSaveAction.java	(.../PortraitSaveAction.java)	(revision f8e00c422047b4cfc062f1a73671895c480f98c2)
@@ -119,7 +119,7 @@
 		
 		User user = (User)getService().getUserByLogin(request.getRemoteUser());
 		// delete old portrait file (we only want to keep the user's current portrait)
-		if (user.getPortraitUuid()>0) centralToolContentHandler.deleteFile(user.getPortraitUuid());
+		if (user.getPortraitUuid()!=null) centralToolContentHandler.deleteFile(user.getPortraitUuid());
 		user.setPortraitUuid(node.getUuid());
 		getService().save(user);