what are the Guvnor and Designer versions you are using?
I used the Drools Guvnor Version 5.3.0.Beta1 and JBPM 5.2.SNAPSHOT from last week.
Can you watch the designer part of the following video and let me know if you can reproduce the same - http://vimeo.com/29457538?
I tried but the behavior is the same, when dragging the task into my process, it just pops back to palette ( but green hook is shown before!).
You can actually reference the documentation chapter 13 to get an idea on what to do - http://docs.jboss.org/jbpm/v5.1/userguide/ch13.html. The jBPM Web Designer does not deal with the actual workitem handler implementation..that is for the user to configure in their runtime.
Does this mean i have to pack my work item java implementation into the .jar file that i have to upload? I really need to control my tasks by Java.
Thanks a lot for taking some time to give me a reply.