Visual Studio 2012 Cannot load designer for .xaml files

My Visual Studio 2012 has stopped loading my xaml files.  The project gives an error when attempting to load any xaml file in my project, including any new ones I try to add.

The indication is:

An Unhandled Exception has occured

Details:

System.ArgumentException

FrameworkName is invalid.

Parameter name: frameworkName

I can view the same project files just fine using Blend for Visual Studio 2012.  Other members on my team have no problems looking at the .xaml files.  I have tried uninstalling and re-installing Visual Studio 2012, with no luck.

Any help or suggestions would be appreciated.  Thanks