Maybe you can try to deploy/check your process and related action/assignment handler
files.
Because ther is an exception in your post:
Caused by no action handler definition, so jBPM can't invoke it correctly.
View the original post :
http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4218841#...
Reply to the post :
http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...