https://bugs.winehq.org/show_bug.cgi?id=30608
--- Comment #21 from Linards linards.liepins@gmail.com --- (In reply to Ken Sharp from comment #20)
So you're saying that the game needs Dotnet 3.5, and the lack of it, in fact, causes this error? There's nothing in the logs to suggest that. In fact there's nothing clear about this bug report at all.
I think that this should be closed invalid until a valid bug report can be built.
Yes, that is my assumption. A fully agree that built-in logs and winedbg (by default) do not provide anything obvious ( like unimplemented function or missing feature level ). Anyways, if you feel it is right way - I have no problem with that. Of course, for full clarity Dan should take a look on wine-staging ticket as he is maintainer of UDK software...