When I was tasked with integrating a process engine into one of my projects, I quickly decided in favor of Activiti. Activiti is the next version of jBPM 4, is compatible with BPMN 2.0, is well documented and has an out-of-the-box module to integrate with Spring. Unfortunately, in a cruel stroke of fate, I was overruled by my hierarchy (because of some petty reason I dare not write here) and I had to use jBPM. This articles tries to list all lessons I learned in this rather epic journey.