http://bugs.winehq.org/show_bug.cgi?id=25954
--- Comment #17 from Juan Lang juan_lang@yahoo.com 2011-06-06 10:41:40 CDT --- Created an attachment (id=35046) --> (http://bugs.winehq.org/attachment.cgi?id=35046) Patch: Make sure machine name is non-empty before failing
Does this patch help?