http://bugs.winehq.org/show_bug.cgi?id=31888
--- Comment #1 from Vincent Povirk madewokherd@gmail.com 2012-11-27 16:06:17 CST --- Urgh, looks like the installer is checking for mscorlib.dll in the 2.0 framework directory.
It's easy enough to put it there, but I don't like having to individually duplicate every file someone decides to check.