I0101 20:32:00.424413 26440 blender_python.cpp:194] Debug flags initialized to:
CPU flags:
  AVX2       : True
  AVX        : True
  SSE4.1     : True
  SSE3       : True
  SSE2       : True
  BVH layout : EMBREE
  Split      : False
CUDA flags:
  Adaptive Compile : False
OptiX flags:
  CUDA streams : 1
OpenCL flags:
  Device type    : ALL
  Debug          : False
  Memory limit   : 0
I0101 20:32:01.052388 26440 device_opencl.cpp:48] CLEW initialization succeeded.
I0101 20:32:01.184180 26440 device_cuda.cpp:41] CUEW initialization succeeded
I0101 20:32:01.186357 26440 device_cuda.cpp:43] Found precompiled kernels
Error   : EXCEPTION_ACCESS_VIOLATION
Address : 0x0000000000000000
Module  : 
Thread  : 00005610
Switching to fully guarded memory allocator.
Blender 2.91.0
Build: 2020-11-25 09:02:56 Windows Release
argv[0] = D:\blender-2.91.0-windows64\blender-2.91.0-windows64\\blender
argv[1] = --debug
argv[2] = --debug-cycles
argv[3] = --python-expr
argv[4] = import bpy; bpy.ops.wm.sysinfo(filepath=r'C:\Users\rlneu\AppData\Local\Temp\blender\debug_logs\blender_system_info.txt')
Read prefs: C:\Users\rlneu\AppData\Roaming\Blender Foundation\Blender\2.91\config\userpref.blend
read file 
  Version 280 sub 39 date unknown hash unknown
found bundled python: D:\blender-2.91.0-windows64\blender-2.91.0-windows64\2.91\python
Read blend: D:\Dropbox\blender\bugs\T83876.blend
read file D:\Dropbox\blender\bugs\T83876.blend
  Version 291 sub 10 date 2020-11-25 08:34 hash 0f45cab862b8
Writing: C:\Users\rlneu\AppData\Local\Temp\T83876.crash.txt