I found out: after upgrading wine, it is neccesary to also reinstall the catalyst-drivers. I didn't mention that I indeed did update wine from 1.2.2 to to 1.2.3. So after reinstalling catalyst a 2nd time, the opengl-error-message is gone. Also the error-messages in 3d studio are gone now. The problem with the broken viewports however, is back again. I'm sure it's just some tweak to make opengl finally work in wine. Any ideas?
