Well it appears that I'm one of a few who after installing the beta for the VS2008 Service Pack 1 ended up losing my ability to visually edit WPF forms. I can still modify the XAML and run the application though so I'm going to turn this lemon into lemonade and spend some time hand modifying XAML files. Hopefully it'll give me a better understanding for how this stuff works. I think a lot of people are going to be surprised when they see how many (delicious) changes WPF brings to the table. So if you're playing around with WPF...