...right now, if you throw away the Maven repository on your local machine and build ACE, it will fail somewhere in the ace-webui module with some GWT problem. Geert already figured out that upgrading GWT to 2.2.0 fixes the issue, but as we're going to ditch that whole module, you can also comment it out for now. JB should get to removing that module soon! :)
Greetings, Marcel
