VS 2017 RC is out, no better time to go remove any old versions of Visual Studio I have lying around. However, when I uninstalled an old version of VS 2012 Express - boom, all my local sites stopped working with the following missing assembly error.
Could not load file or assembly 'Microsoft.VisualStudio.Web.PageInspector.Loader, Version=18.104.22.168, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The module was expected to contain an assembly manifest. It looks like it’s an assembly that VS 2012 adds which is why it’s no longer available after uninstall, but we are still trying to reference it somewhere.