I've uninstalled VS11+, repaired my OS, then reinstalled VS11. This usually works. However, not this time. VS is still closing on me when trying to do anything with it.
I've just found an extra 60gb HDD...Let's start with putting just the OS and VS11+ on it and setting up a editing profile which shuts off any windows activity in the background.
This drive thusly becomes dedicated to video editing which is recommended.