I have recently gotten this error when trying to run FTM 2012 on my desktop. It had run for some time perfectly well and the only updates I'm aware of on my PC were as a result of automatic updates from Microsoft. The PC is running MS Windows 7 Ultimate 64-bit Service Pack 1.
I have also installed FTM 2012 quite successfully on my Dell Laptop which is running MS Win 8.
From googling around it looks like a .NET error but nothing I can find (including re-installation on the desktop) helps me to identify the actual problem.
Has anyone else come across this and if so, what fixed it? If not, perhaps you might help me track down the errant .dll file (or whatever). Many thanks