http://bugs.winehq.org/show_bug.cgi?id=15296
--- Comment #12 from Yolande Haneder yolande@haneder.biz 2008-10-19 00:38:15 --- It may be the same, although my message is a bit more cryptic (like instead of that the installation couldn't finish because of an error, I am prompted to send a message to MS). I only know it is at the end because of skipping this error when starting the installation again.
In my case it is definitely a regression.