In 4.0c beta 2, I have been getting frequent crashes of the display driver.
Sometimes Logos just suddenly crashes (apparently randomly). More often the screen will go suddenly blank for
a second, then I get the Windows error "Display driver stopped responding and has successfully recovered". Logos may not crash in this case.
The problem has been happening several times a day over the past few days. I cannot see a pattern yet. It does seem to happen when I have not done anything with Logos for a while and it has just been running side by side with my word processor. When this happens, sometimes the Logos screen will go black, the error message will appear, then I get a Logos crash. Other times, the whole display flashes and then Logos continues running without crashing.
In am running Windows 7 x64, on a Thinkpad W510 laptop with an i7 processor and an NVIDIA Quadro FX880M processor. All of the Windows and display drivers are up to date.
I will try to run with logging enabled and see if I can catch a useful error log. It is unpredictable, however. I know people will blame the display driver, but no other program causes this to happen. I wonder if others have had a similar problem.