Visual Studio 2012 - Cannot open xml, web.config, or app.config by Rbdb51

I have encountered an issue that whenever I try to open an xml based file; *.xml, web.config, app.config, etc I get the error "Value does not fall within expected range". This happens with all files regardless of project or solution. I have reinstalled visual studio and still get the same error. Additionally I have tried starting a new solution and new project and have the error. I have added new xml files as well and also get the error.