This was probably something which was missed in the blender 4 update. Need to investigate.
Error: Python: Traceback (most recent call last):
File "/home/joepal/.config/blender/4.2/scripts/addons/mpfb/ui/rigify/operators/converttorigify.py", line 48, in execute
helpers.convert_to_rigify(blender_object)
File "/home/joepal/.config/blender/4.2/scripts/addons/mpfb/entities/rigging/rigifyhelpers/rigifyhelpers.py", line 72, in convert_to_rigify
bpy.ops.pose.rigify_generate()
File "/home/joepal/system/blender-4.2.0-linux-x64/4.2/scripts/modules/bpy/ops.py", line 109, in __call__
ret = _op_call(self.idname_py(), kw)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
RuntimeError: Error: No bone collections have UI buttons assigned - please check the Bone Collections UI sub-panel
This was probably something which was missed in the blender 4 update. Need to investigate.