Hello,

Someone (he don't want credit so I don't give it) contact me yesterday on discord because he find a solution to "fix" this bug who appear principally on GOG version. Here the solution (I can't try by myself so I hope that works for people who need it) :

1°) create a new mod manually
2°) add files and folders from "Breat's package" in the new mod
3°) start the game and normally you can activate my mod