Hi, I am getting this error message when executing rules in MR2. I use drools runtime wrapped in an ejb and deployed in jboss. Is this javassist version issue? Which version is required for MR2? How do I debug this further? 8:15:05,731 ERROR [STDERR] [error] javassist.NotFoundException: org.drools.spi. onsequence.. Do verbose mode if you want full stack trace. Thanks Seegler