I'm getting the following error when deploying from JBPM eclipse interface to alfresco. This happens when I select 'classes and resources to include in process archive', like 'src/main/java' etc.

Exception happened while deploying
java
.lang.NullPointerException
at org
.jbpm.gd.jpdl.util.ProcessDeployer.addClassOrResource(Unknown Source)
It was working perfectly, just stopped working suddenly. Any clues? Thanks.
http://stackoverflow.com/questions/9486907/jbpm-workflow-deployment-into-alfresco-error