While synchronize my current project, following message appear several times:
Source file …/Documents/BBWorkspace/user_lib/songs/Main2 - Project/EFFECTS/703696F2.hash.bcf does not exist
Is this a problem, what to do?
Thanks,
This is a problem that will soon be gone for good. Just press OK and please pretend you didn’t see it in the meantime 
Nothing is actually affected aside from this annoying message.