Are you on Wine 1.1.41? There is a regression that prevents installers from running properly: http://bugs.winehq.org/show_bug.cgi?id=22066
According to a bug report there should be a new version (1.1.42) out in “two weeks”:
It's a development release, things are often broken. 1.1.42 should be out in
two weeks, so either use 1.1.40, patch 1.1.41 manually, or wait for 1.1.42
(assuming this patch makes it in).
Patch:
Patch sent: http://www.winehq.org/pipermail/wine...ch/086074.html
Which is reported to fix the issue; if you can't wait, can't downgrade but are up to compiling from git...