http://bugs.winehq.org/show_bug.cgi?id=8033
--- Comment #48 from Dan Kegel dank@kegel.com 2007-10-07 15:40:52 --- I think, until 1.0, it's reasonable to require users to start with a fresh .wine directory when installing new versions of Wine. That's life in beta software land. As I said earlier, if you don't want to put up with stuff like this, you should only use released software, not betas.
After 1.0, we'll have to handle upgrades much more gracefully.