Ran a couple other times and got these results in nxtrace.log after crash:
#0 0x69a5220c libnxdifb.dll(fbBlt)
#1 0x695e4c34 libpixman.dll(pixman_image_create_radial_gradient)
#2 0x69a5eb5e libnxdifb.dll(fbCopyWindowProc)
#3 0x69b61adf libnxdifb.dll(miCopyRegion)
This is different from the original nxtrace but seems to be more common.