Today I tried for the first time to create a Silverlight 1.1 (respectively 2.0) project. But even during the first try to compile the project, I got lots and lots of errors, saying that there was a namespace missing. The namespace I read at most was: "System.Windows".
In the silverlight board I found several other guys, which encountered the same problem as I had and couldn't solve it, even if the un- and reinstalled Silverlight and event the whole Visual Studio ... Obviously they made the same fault as I did :-D
If you create a silverlight project it looks as follows:
If you're also having corrupted references for the assemblies "agclr", "system.silverlight" and "system.Xml.core", you probably made a fault during the installation of Silverlight 1.1.
After I downloaded all tools I found on the Silverlight-page, I had to confess to myself, that I've had ignored one download ... It was the "Silverlight 1.1 Alpha Refresh" runtime. I thought that everything I needed was in the SDKs - that's a wrong conclusion!
If you install the VS-tools, you just get the TEMPLATES, which are telling VS how to handle that Silverlight stuff. The assemblies themselfes are in the browser plugin...
The alert I was shown was: "Please close all browser windows first and uninstall Silverlight". For sure I didn't want to uninstall Silverlight - and that was my fault. Obviously you have to uninstall any Silverlight plugins to install the current version.
Meanwhile everything works fine (and great!)