http://bugs.winehq.org/show_bug.cgi?id=6930
--- Comment #20 from NSLW lukasz.wojnilowicz@gmail.com 2009-12-16 10:43:09 --- (In reply to comment #19)
There was no workaround in earlier versions of Wine, it was a bug that kept other apps from installing. See bug 20729 for example.
Now it keeps all AutoCADs 2008 (and who knows what else) from installing. I hope you'll get things right soon.