Go to your SavedVariables folder and backup all the GSxxData files from 00 to 17 please. Copy them to another folder or a backup folder on your desktop, whatever. Make a zip and attach it in the forums or provide a
Mediafire link or some link I don't have to create an account for that you use. I want to look at the files.
Then follow the documentation:
https://esouimods.github.io/3-master...html#Luaerrors
There is a link to the button to Reset LibGuildStore, the third option:
https://esouimods.github.io/3-master...html#ResetData
Be sure to wait for the refresh to finish. Keep only MM enabled until the refresh is done. Does that resolve the issue?