wlu: null pointer check
diff --git a/1.5/plugins/org.eclipse.epf.library/src/org/eclipse/epf/library/util/LibraryEditUtilProvider.java b/1.5/plugins/org.eclipse.epf.library/src/org/eclipse/epf/library/util/LibraryEditUtilProvider.java
index 662db21..20110cd 100644
--- a/1.5/plugins/org.eclipse.epf.library/src/org/eclipse/epf/library/util/LibraryEditUtilProvider.java
+++ b/1.5/plugins/org.eclipse.epf.library/src/org/eclipse/epf/library/util/LibraryEditUtilProvider.java
@@ -83,6 +83,9 @@
 				.newElementRealizer(config);
 				
 				MethodElement element = ProcessUtil.getAssociatedElement(desc);
+				if (element == null) {
+					return false;
+				}
 				EReference elemRef = LibraryEditUtil.getInstance().getLinkedElementFeature(ref);
 				List<MethodElement> elementList = ConfigurationHelper.calc0nFeatureValue(element,
 						elemRef, realizer);