Let’s be honest: Frosty Mod Manager is not user-friendly in the traditional sense. It never was. Where Vortex or Mod Organizer 2 feel like polished librarians, Frosty feels like a nuclear reactor control panel designed by people who hate buttons. It requires .NET runtimes that conflict with themselves. It sometimes forgets your game path after a Windows update. It uses a proprietary .fbmod format that no other tool can read.
If you are struggling with version 1.0.6.3, the following steps are frequently cited as successful solutions by users on Reddit and EA Forums : frosty mod manager 1.0.6.3