I have a similiar problem on jboss (4.2.3 or 5.1.0.GA).
I erased package javax.el.* from juel.jar and it worked for me, but I did not really test it out.
Thank for your Answer!
I am completely new to jBPM and so I’m just at the state of playing around and trying out something.
I have downloaded the newest version of juel an only put the “juel-impl-2.2.1.jar” into my WEB-INF/lib.
I can start Tomcat now and at my early state of testing and development I have not found any problem…