I am opening an older WebForms project and trying to update it to ASP.NET MVC 4 in Visual Studio 2013. When I add a new project I can run it and everything works fine.
When I try to open up the Razor views (cshtml files) VS2013 gives me the generic 'The Operation could not be completed.' error message and won't open them.
If I create a new project not inside of the WebForms solution it opens the views fine.
If I right-click the file and choose 'Open with' and 'HTML (Web Forms) Editor' it opens up but without the Razor syntax highlighted.
What gives?