Hello, it is very likely that some files that are only found in the "Global de l'Acadèmie" folder are missing. Richard makes but all his routes, most of them with this folder.
Here, http://www.thuthuboutick.fr/agedormidi/translategb.htm in point 9 you will find the download of the folder that you must locate in the root directory of the game. It's not necessary to overwrite the Global folder of origin, you can rename it (for example Global_x) and give the downloaded one the true Global name.
However, review all other points that may be of interest.
Particularly, I think the option that best fits your problem is 9.
I hope it helps you.
Greetings.