Hello,
The previous update of the game contained a regression in the french league 3 and 4. Most games would end up with a team forfeiting due to an issue with import players rules.
We've fixed the problem in this update, it will require a new career to be fixed (if your career has the issue).
We've also released a new dataeditor which should fix issues around mod duplication and improve the scaling of the editor on big resolutions.