Commented Issue: Designer: Existing extensions do not work [1162]

The assembly version of Microsoft.Data.Entity.Design.Extensibility.dll has changed from 11.1.0.0 to 12.0.0.0. Unless we put a binding redirect inside of devenv.exe.config, exiting designer extensions will not work. We should consider keeping this assembly's version at 11.1.0.0 (possibly only on VS11).

__Workaround:__
Re-compile extension against version 12.0.0.0 of Microsoft.Data.Entity.Design.Extensibility.dll
Comments: Reactivating so that we can take a closer look at extension compatibility based on some conversations we had today.