blender-portable-repo/extensions/user_default/retopoflow/devnotes/blenderbugs.md

If install add-on, ex: RetopoFlow, but after enabling change the name, ex: retopoflow, Blender's startup crashes and does not start up add-on

Traceback (most recent call last): File "/home/jon/software/blender-2.82a/2.82/scripts/modules/addon_utils.py", line 351, in enable mod = import(module_name) ModuleNotFoundError: No module named 'RetopoFlow'