Error while deleting in jbpm 4

[makam]

Hi, sorry by my english,
I have some problem, maybe you can help me,
i´m working with jBPM 4.0 with spring and hibernet, i have integreted jbpm to my solution and everything worked perfect , but i can´t delete anything from Data base, i´m using MySQL . I can do the deploy of the process and get instance and create user and everything, but i can´t delete anything, it throw me an java.lang.NullPointerException but the id are ok.
well thaks ;)

[kukeltje]

please try 4.1 first and search the jira if there are/were any issues regarding deleting things (I think there are/were)