https://bugs.winehq.org/show_bug.cgi?id=37163
--- Comment #2 from Alex Henrie alexhenrie24@gmail.com --- Created attachment 49396 --> https://bugs.winehq.org/attachment.cgi?id=49396 Microsoft .NET Framework required for WiX Toolset v3.8.1128.0 setup
Interesting, I was using Wine 1.7.24 before, but when I switched to Wine 1.7.25 this dialog appeared. So the primary problem seems to be that WiX doesn't think that the .NET Framework is installed, even though Mono should be a suitable replacement.