The recreate is easy:
OS: Windows 7 Ultimate x64 installed
Machine: Not relevant, this has happened on 3 different computers in our office.
1. Install Revit 2012
2. Install Revit 2013
3. Install .NET 4.5
4. Open Revit 2013 or 2012
5. Open an existing project or new project.
6. Click on a family in the drawing (window or door not system family) I went with door.
7. When you click on the door family.
Observe: You should get a series of panels on the ribbon menu that are specific to the door family and what options are available.
Observe: You won’t get the specific panels that relate to the door family. You will get the standard modify panel that apears for all famlies & elements.
I have a pressing project and preformed a system rollback this morning (pre .NET 4.5) that fixed it so I can’t recreate or screen shot, however others have:
There is a hot fix that will solve the issue with Revit 2013. However there is no fix to allow Revit 2012 to work on .NET 4.5, that I have found yet.