WPF Control files are opening as Text Files on Visual Studio 2008

Though other types of files open fine and Auto completion is working, but Usercontrol(XAML files) appear as plain text with no syntax highlighting.

I went to the Text Editor section under Tools->Options and, whenever I tried to bring up the Formatting开发者_如何学JAVA options for XAML, it says an error occurred.

It was working fine, but I had to uninstall/reinstall VS 2008 for some other issue and it's not working now.

Have you tried using "devenv /resetsettings" or "devenv /ResetSkipPkgs" ?

I remember having similar issue a long time ago, and was able to fix it by using some command-line reset of the IDE.