Sergio, I'm not trying to run anything yet. It is doing some validation. It flags errors for the installer sample Evaluation.bpmn, which defines sequence flows like this: <sequenceFlow id="_1-_2" sourceRef="_1" targetRef="_2" /> The BPMN editor doesn't recognize that. I added sequence flows in the editor and they look like this: <sequenceFlow id="_SB0NEIiLEeC8wfJlMMHAAw" name="Sequence Flow" sourceRef="_1" targetRef="_2"/> and the original sequence flows were not removed.