wei wei [http://community.jboss.org/people/wwweeii] created the discussion "Re: java.lang.IllegalArgumentException: attempt to create merge event with null entity" To view the discussion, visit: http://community.jboss.org/message/610455#610455 -------------------------------------------------------------- I met some problems like these .But i met these wrongs when i start a process twice in a ksession.I don't know how to solve the problem.  -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/610455#610455] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]