Here’s how to disable automatic outlining /region folding in Visual Studio 2010. Go to Tools->Options->Text Editor->C#->Advanced and uncheck Enter outlining mode when files open.
I have just downloaded and started to play with Silverlight 4 in Visual Studio 2010 Beta 2. In attempt to create a Silverlight Business Application, i got this error message: Error 1 The type or namespace name ‘UserRegistrationContext’ could not be found (are you missing a using directive or an assembly reference?) h:\Personal\Visual Studio 2010\Projects\BusinessApplication1\BusinessApplication1\Views\Login\RegistrationForm.xaml.cs [...]