[jboss-user] [JBoss jBPM] - Hibernate problem after upgrading to version 3.1.3

[michaelholtzman]

Greetings. After upgrading from v3.1.2 to v3.1.3, I started getting hibernate errors in code that has worked for months.

The exact exception thrown varies slightlly, but they all have this in common:

First, there is "Unknown entity: java.lang.String", and then shortly after "error in persistence service". Sometimes I also get "unable to remove timers from process instance". It seems like this happens when a process instance has completed, but I am still trying to narrow that down.

Has anybody seen any similar problems? Any ideas on the root cause, and how to fix it. 

When I revert back to v3.1.2, the problem does not appear.

Thanx.

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