http://bugs.winehq.org/show_bug.cgi?id=31438
--- Comment #47 from Rosanne DiMesio dimesio@earthlink.net 2013-01-07 09:54:52 CST --- (In reply to comment #40)
It is still trying to invoke parts of the OS that Wine does not support though, see the first attachment, the errors about (paraphrasing) "class {dcb00c01-570f-4a9b-8d69-199fdba5723b} not registered", is something for Vista and above, and the downloads don't even start any more.
If that's the cause of the problem, then this is a duplicate of bug 30384.