Every time I run CK , I get screen blanks , comes back , Error message "NVidia driver has stopped working" , it may recover but 50% of the time CK crashes , it is really frustrating and for me makes the tool unuseable, the daft thing is I don't have any issues in game it all runs fine , the only other piece of software I have a similar issue with is Hearts of Iron III nothing else

I know its a pretty fruitless post but just wanted to put it out there to see if other people have the same issue or by some miracle have solved it

That sounds like a graphics card related issue. I got similar messages with my old card (Radeon x1950Pro) last year, because it was getting old and overheated all the time.
Although I don't see why the CK would crash because of this, so it could be something else ! And if the game runs fine, then the GPU is probably not the issue..

The CK requirements are MUCH higher than for the game. The CK is much more intensive than the game is.

The evidence suggests not , Playing the game for 15 mins in High quality grx at 1920 * 1080 Max GPU temp 70c Max Core temps 50c

Using the CK for 15 mins before it crashed again Max GPU temp 50c and Max Core Temp 40c , in fact when it crashes GPU temp 44c and Core Temp 41c

The crashes seem to occur when I am manipulating the render window to view the object I am creating , there is an initial freeze for a second and then the screen blanks (resets?) and I get the Nvidia message and as I said in initial message 50% of the time the CK crashes or continues to work

I'd check for a newer Vid Driver but TBH all the Beth Kits have been prone to crashes, sometimes you get a clean run and other times bang, crash every 5 Min's. Best to set the auto save to very, very regular

Yes check for new drivers for your video card, probably all you can do.

Yes, check for new drivers. This definitely sounds like a GPU problem, not directly related to the CK.