Error   : UNKNOWN EXCEPTION
Address : 0x00007FFBAFA53E49
Module  : KERNELBASE.dll
Thread  : 00001548
Switching to fully guarded memory allocator.
Blender 2.91.0 Beta
Build: 2020-10-30 00:12:36 Windows Release
argv[0] = D:\Blender\Alpha versions\blender-2.91.0-9e85812acc88-windows64\blender-2.91.0-9e85812acc88-windows64\\blender
argv[1] = --debug
argv[2] = --debug-gpu
argv[3] = --python-expr
argv[4] = import bpy; bpy.ops.wm.sysinfo(filepath=r'C:\Users\m\AppData\Local\Temp\blender\debug_logs\blender_system_info.txt')
Read prefs: C:\Users\m\AppData\Roaming\Blender Foundation\Blender\2.91\config\userpref.blend
read file 
  Version 280 sub 39 date unknown hash unknown
Writing: C:\Users\m\AppData\Local\Temp\blender.crash.txt