Problem building VS 2013 solution after upgrading to v9.2

[MOConnor]

I upgraded to V9.2 yesterday and today I found that none of my VS2013 build scripts ran. The error said it was missing Microsoft.Cpp.Default.props. I created a macro that pointed to where it is and retried. Now I'm getting an error on every project that says "The imported project "C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120Microsoft.CPP .UpgradeFromVC71.props" was not found. Confirm that the path in the <Import> declaration is correct, and that the file exists on disk.". Does anyone have a fix/explanation for this? Thanks in advance!