http://bugs.winehq.org/show_bug.cgi?id=28158
--- Comment #7 from MestreLion wine@rodrigosilva.com 2011-08-22 19:47:28 CDT --- The registry is case-insensitive, but winemenubuilder is not! Problem is that native system is not... winemenubuilder should be able to correctly find mimetype for .Z