Problem loading saved project

Nope, just left that sucker for 10 minutes and no dice.
The WK console comes up, mixer appears to load but the actual windows just don’t appear.
I do not understand why this has happened - nothing, nothing at all - has changed

The only “out” is task manager, which shows under 1.3Gb RAM in use (which is a hell of a lot considering the size of the project) and Nuendo as “not responding”.
I have to crash the computer to get back to desktop.