diff --git a/plugins/org.eclipse.wst.validation/vf2/org/eclipse/wst/validation/internal/ValidatorExtensionReader.java b/plugins/org.eclipse.wst.validation/vf2/org/eclipse/wst/validation/internal/ValidatorExtensionReader.java
index 2f8688f..aa191c6 100644
--- a/plugins/org.eclipse.wst.validation/vf2/org/eclipse/wst/validation/internal/ValidatorExtensionReader.java
+++ b/plugins/org.eclipse.wst.validation/vf2/org/eclipse/wst/validation/internal/ValidatorExtensionReader.java
@@ -279,7 +279,19 @@
 	 */
 	private void processRule(FilterGroup fg, IConfigurationElement rule) {
 		FilterRule fr = FilterRule.create(rule.getName());
-		if (fr == null)throw new IllegalStateException(ValMessages.ErrFilterRule);
+		if (fr == null){
+			String contributor = ""; //$NON-NLS-1$
+			String name = ""; //$NON-NLS-1$
+			try {
+				contributor = rule.getDeclaringExtension().getContributor().getName();
+				name = rule.getName();
+			}
+			catch (Exception e){
+				// eat it
+			}
+			throw new IllegalStateException(ValMessages.ErrFilterRule + " : " + //$NON-NLS-1$
+					contributor	 + " : " + name); //$NON-NLS-1$
+		}
 		fr.setData(rule);
 		fg.add(fr);
 	}