Wow! Yesterday I just got the same error and submitted it to Tech Support. See below:
I was thinking it may have been hardware specific, but seeing how you have an Intel/nVidia Rig verses my complete AMD Rig, it rules that out. All I have to do is open Chief, select the sample plan and try to RayTrace... gets to the black and white checkered screen, and bombs out. I can open Chief, draw 4 walls try to RayTrace and it does the same thing. This is all on a fresh install of Chief.
Hope this gets resolved soon. I would even be willing to load a copy of the Beta X7 to give it a try. Very weird! And no, this is NOT in Trial mode.
Keep getting this error no matter what sample plan I try to raytrace or even if I draw just 4 walls and try to raytrace. C:\p4sync\dev\Releases\16\chief\source\raytrace.cpp(497): Error #272032345 "An unexpected error occurred while ray tracing." 1/8/2015 11:08:29 PM Build: 16.4.1.20x64 Running: Windows 7 Home Premium 64-bit SP1 AMD A10-7800 AMD 16Gb RAM AMD Radeon R7 Graphics 1024Mb AMD Radeon R7 240Gb SSD