Hi, I am using 'drools-distribution-5.4.0.Final' and 'eclipse helios 3.6.2' . I have created a simple example using rules, it runs correctly but when trying to debug it as drools application I got the following error in 'error log' : Plug-in 'com.google.gwt.eclipse.core' contributed an invalid Menu Extension (Path: 'com.google.gdt.eclipse.suite.popupMenu.file' is invalid): com.google.gwt.eclipse.core.actions.AddResourcesToClientBundleAction Can anyone help me to identify the problem? Thanks -- View this message in context: http://drools.46999.n3.nabble.com/Not-able-to-debug-Drools-Rules-tp401813... Sent from the Drools: User forum mailing list archive at Nabble.com.