Ronald,

I was suspecting a transaction rollback also, but it turns out that one clever 
user has wondered onto the page where you can manually move between tasks in a 
process using the native jbpm-console.  Doing that totally messes up things as 
it leaves the original task open.
We used to link to the native console to show the current process image and the 
current active task. It turns out there is no way to clamp down permissions 
sufficiently using the properties file provided. 

The solution was to eliminate all access to the native console except for a few 
admins who understand how to use it. We just serve up the static process image 
retrieved from the process definition file through a little servlet and the 
user has to locate the task name on it. The current task name is provided in a 
small pop up screen.

This incident gave me serious grief and I never seen it in the development 
environment. We are using JBPM in a production pilot at this point.

Thanks,
Tamas

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