Thank you very much.

I haden't checked the contents of the original addon, mea culpa.
Just saw you were kind of overwriting only the 2 files so I thought the others will still exists in the folder and will be used, if the base addon was installed.

Depending on if a user uses Minion (will delete the whole folder of the addon + subfolders before updating, so this would work well!) or manually updates addons (most users just extarct and overwrite so the old libs subfolder would still be there - txt loads them -> lua errors ) this fails then.

So it's always better to totally clean up these txt files as you cannot know what the users do on their side.

Maybe someone already removed them and just did not clean up the txt file.