Index: PersistenceManagerImpl.java
===================================================================
RCS file: /cvsroot/jpox/JPOX/Core/src/java/org/jpox/resource/PersistenceManagerImpl.java,v
retrieving revision 1.37
diff -u -r1.37 PersistenceManagerImpl.java
--- PersistenceManagerImpl.java    2 Nov 2005 19:15:15 -0000    1.37
+++ PersistenceManagerImpl.java    14 Dec 2005 11:41:25 -0000
@@ -1428,7 +1428,9 @@
      */
     public void removeQueryResult(QueryResult queryResult)
     {
-        mc.removeQueryResult(queryResult);
+        if (mc!=null) {
+            mc.removeQueryResult(queryResult);
+        }
     }
 
     /* (non-Javadoc)