http://bugs.winehq.org/show_bug.cgi?id=25590
--- Comment #3 from Hans Leidekker hans@meelstraat.net 2010-12-23 05:16:42 CST --- Regardless of the incorrect value for UninstallString, native appears to ignore this value if WindowsInstaller is set to 1.
We should fix uninstaller to do the same.