http://bugs.winehq.org/show_bug.cgi?id=25687
--- Comment #4 from Hans Leidekker hans@meelstraat.net 2013-06-28 02:58:05 CDT --- Created attachment 45012 --> http://bugs.winehq.org/attachment.cgi?id=45012 patch
Please give this a try. I'd like to see a +msi trace if it still fails.