title: How to use a .NET 4.0 application on .NET 4.5?
body: <p>I'm the end-user of a program that relies on WPF from .NET 4.0.  Installing .NET 4.5 causes the CAD to break, but I'd really like to use Visual Studio 2012.</p>
  
  <p>Is there any way to maintain compatibility with the .NET 4.0-reliant application while having .NET 4.5?</p>