I've installed .NET 4.5 yesterday, because of sleeping mode problems on my HP 8740W elitebook. WIndows 7 64bit is installed. This morning I started Revit Architecture 2012, and all works fine. But then I've started up Revit 2013 (from the Building Design Suite Ultimate) and Revit didn't startup.
Does anybody else have the same problems, and what is the solution?