i'm doing my master thesis on jbpm. at the moment i need to develop my own node types. i have already changed some of the jbpm nodes, that worked fine. but now i need a new node. looking in the source and debugging i found out that in my case the only problem is that new node doesnt belong to jpdl an so theres a sax exception. could someone tell me the best way to solve this? ronald pointed towards the wiki, but unfortunately i was to stupid to find it there.