https://bugs.winehq.org/show_bug.cgi?id=42857
--- Comment #5 from florian-edelmann@online.de --- I haven't done anything different than running the said winetricks command on my existing setup (win32 with the two other winetricks verbs already installed as described in the first comment and the log). After that, I could select a fixture and it was loaded correctly into both the fixture editor and the main application.