http://bugs.winehq.org/show_bug.cgi?id=5054
--- Comment #18 from Hans Leidekker hans@meelstraat.net 2009-01-16 06:04:36 --- Created an attachment (id=18726) --> (http://bugs.winehq.org/attachment.cgi?id=18726) wininet: Avoid illegal filenames in CreateUrlCacheEntryW.
Try this one.