http://bugs.winehq.org/show_bug.cgi?id=16051
--- Comment #7 from Hans Leidekker hans@meelstraat.net 2008-11-25 08:34:20 --- I stubbed out gdiplus to the point that native should not be needed anymore to reach this exception.
I looked at the RSS related exception for a bit but found nothing conclusive. Wireshark tells me that the feed is received in full and since Wireshark is able to parse it I assume it's not something in the RSS feed itself.
I also suspected our dotnet installation for while so I copied one from Windows, but it made no difference.