Huisheng Xu [http://community.jboss.org/people/rebody] replied to the discussion "ClassCastException: JpdlProcessDefinition cannot be cast to ProcessDefinitionImpl" To view the discussion, visit: http://community.jboss.org/message/539108#539108 -------------------------------------------------------------- Hi Jordi,   It seems there are multiple jbpm.jar or jbpm-jpdl.jar in your classpath.  The same class JpdlProcessDefinition were loaded by difference ClassLoader. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/539108#539108] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]