I don't know if anyone else has come across this, but I had a render going (was 10 hours in) and decided that I wanted to look at something on goole earth (the richat structure in the sahara if anyone is interested - something to try and create in TG2?). To do this I had knocked the thread priority down so that google earth would function ok which has never previously caused me problems and I do quite often since TG2 still renders at about 80% and you can watch video, use photoshop etc... quite happily.
However to my dismay on killing google earth I discovered that TG2 would not ramp up again even when it's thread prioity was increased back up. It was just sat at 0% processor usage (with idle at 99%). All I had was a blank (white) render window and no repsponse form the UI part. I left it running whilst searching for, and desperately hoping that, the temp file might allow me to use half the image and create second half from a crop. This involved opening a second copy of TG2 and exploring temp files as I wasn't sure where they were held and search was taking too long. I unfortunately seemed to have no temp file from this render (does it only create them at the end or on abort?) so was feeling pretty dispondant. But then, about 3 or 4 minutes after the google earth process ended and just as I was about to give up and kill TG2, it suddenly just kicked off and is rendering away happily again.
Just though I'd post that in case anyone every has the same or similar problem.... solution would appear to be just to sit and wait! (or maybe starting a second copy helped???)
