[Bug 56571] osu! quits with InvalidCastException when using wine-mono

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=56571

--- Comment #5 from Esme Povirk  ---
My guess is that it's looking for some internal fields and fails when it
doesn't find them. Anyway, I don't know what it wants at this point, and I
can't find any corresponding code on ppy Github. So without help from the
developer, I think that further work is impractical.

I'll still clean up what I have so far for inclusion in Wine Mono.