I've been away from the forum for a long time, and I apologize that no one answered your question. Being that so much time has passed, this is likely no longer useful to you; however, if you are still using DIVA and encountering this problem, please see below.
Clicking any of the DIVA buttons should cause DIVA to load. Is this not the case? If so, can you please attach a screenshot of the actual errors received?