Simon, The library is a reference to the JBPM runtime you configured when you created the project. anonymous wrote : I'm trying to strip down to the minimum libraries needed for our JBPM application You need to be clear on whether you mean in the GPD (Eclipse plugin) or the engine. Frankly, this sounds unlikely to be important to you... do you really want to go after this? You have bigger fish to fry, I suspect. If you're thinking about the engine, I doubt there's much to get rid of. Hibernate alone is responsible for a lot of the dependencies, as I recall. Start there. -Ed Staub View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4044960#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...