How do I use the additional Silverlight Toolkit controls?

I've got VS2010 installed, I've downloaded the Windows Phone add-in and the Silverlight Toolkit from CodePlex, but I cannot work out for the life of me how to actually use the controls in a Windows Phone 7 application...

How do I add the controls into the开发者_JAVA技巧 toolbox, or link them so that the XAML doesn't give me errors all the time? For instance, using the Viewbox - the controls aren't implemented, and the XAML does not compile.

You're probably running into this bug:

http://www.manyniches.com/windows-phone/signed-assemblies-bug-in-the-windows-phone-tools-ctp-refresh/

The Silverlight toolkit wasn't working for me after the April Update.

Did you add a reference to the Silverlight Toolkit assembly in your project?

By the way, Jeff Wilcox has a comprehensive overview of the Silverlight Toolkit controls that work on Windows Phone.