Huisheng Xu [http://community.jboss.org/people/rebody] replied to the discussion "error on serialization object" To view the discussion, visit: http://community.jboss.org/message/540806#540806 -------------------------------------------------------------- Hi  r ana,   I checked jBPM 4.1 and this problem seems caused in org.jbpm.pvm.internal.type.converter.SerializableToBytesConverter.convert().  The exception information that you provided was not enough,  so I can't go further.   First, I suggest you use the latest version of jBPM 4,  jBPM 4.3.   Then if the problem cannot be solved, please show us the full exception stack trace.  You'd better give us a testcase, so we could reproduce this problem and find out a solution.   Thank you. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/540806#540806] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]