Yes, Bonesculpt is compatible with almost any rig, including simple armatures. It also respects your rig's existing limits and constraints, ensuring controlled posing without unwanted movements.

Yes, it respects the industrial standard, Blender old School keymapping and even your custom mappings. You can customize all the shortcuts for the addon.

This issue is rare. However, if you encounter it with your file, please uninstall and reinstall the add-on. If possible, please also share the error log file with me so I can investigate the issue and work on a fix. Thank you for your support!