**System Information**
Operating system: macOS-10.15.7-x86_64-i386-64bit 64 Bits
**Blender Version**
Broken: version: 3.5.0 Alpha, branch: master, commit date: 2022-12-19 20:56, hash: `rBc2a8d8b18ddb`
**Short description of error**
Please see this screen-record showing the procedure to reproduce the error:
{F14099138}
The error messages were:
Traceback (most recent call last):
File "/Applications/Blender.app/Contents/Resources/3.5/scripts/modules/addon_utils.py", line 369, in enable
mod.register()
File "/Applications/Blender.app/Contents/Resources/3.5/scripts/addons/rigify/__init__.py", line 511, in register
ui.register()
File "/Applications/Blender.app/Contents/Resources/3.5/scripts/addons/rigify/ui.py", line 1508, in register
animation_register()
File "/Applications/Blender.app/Contents/Resources/3.5/scripts/addons/rigify/utils/animation.py", line 994, in register
register_class(RIGIFY_OT_get_frame_range)
ValueError: register_class(...): already registered as a subclass 'RIGIFY_OT_get_frame_range'