My diagram contains around 40 objects. Some ids generated by activiti designer are unfortunately duplicated (duplications in sequence flow ids and receive task ids) therefore after conversion to bpmn20.xml process doesn't start (errors in bpmn20.xml)
Could you tell a little bit more about when these duplications were added? Did it happen after reopening the diagram for example? Or did you draw the 40 objects right after each other without a pause?
Today i came across same problem(designer 0.8). I added extra receive task + timer boundary event to my 70+ elements process. After deployment engine could not process flow. Apparently timer boundary event started to generate IDs from beginning (I did not modify files outside editor).
