I had a problem with one of mods (SkyShards). I've updated it several times via Minion, but same in-game exception happened again and again. When I finally decided to fix the code by myself, I failed to save changes because i had no permissions.
This was because of wrong owner. Instead of having `username:staff`, SkyShards had the owner `root:wheel`. And the version was old and outdated, however Minion shown me that it was updated properly.
One fix was to `sudo chown` and update again, another one was to uninstall, then do `sudo rm`, and the reinstall.