title: 'Forms' is not a member of 'Windows'
body: <p>I tried to change the Target Framework on my app recently from .NET Framework 4.5 to 4.5.2, but if I do I get the following error when trying to build: "'Forms' is not a member of 'Windows'" (that is, <code>System.Windows.Forms</code>). Changing to 4.5.1 works normally. I'm using Visual Studio 2013 Ultimate.</p>