That message is usually a result of U1 not responding as expected. It could be that they really send you something invalid, or that Conboy simply has wrong expectations

Anyways, I wasn't completely clear. What I would need is the console output that you get during a sync. Not the output of Conboy starting up.

Resetting the gconf keys is (should be) done whenever you reauthenticate, so usually it shouldn't be necessary. Still, good that you tried already