http://bugs.winehq.org/show_bug.cgi?id=13394
--- Comment #14 from Vincent Povirk madewokherd@gmail.com 2008-06-22 09:54:31 --- The 8.3 bit is probably unrelated. It seems to happen on my Windows machine any time files are copied to a directory without specifying a destination filename, but I'm not convinced it will happen on Windows systems in general. Anyway, the installer doesn't seem to mind if the filenames aren't truncated.