Painter 8.2.0 - Project lock since last update

Hello, 

I'm posting here because I'm facing an issue since the last 8.2.0 update. The first launch after the update, without any project open, I couldn't open any menu, and I had "project lock" (or something like that) in the name of the application. After a restart, it was fixed. 
But now, everytime I save a project, I'm getting a red error " The project is locked.".

I couldn't find anything on google about that, so here I am. In a way, it's blocking my Xolotl plugin too, I contacted the dev of the plugin, but he just said it could be alot of things and didn't push further. 

Thanks