Cause: Windows UAC (User Account Control) or folder permissions. Fix: Navigate to your FIFA 15 folder. Right-click → Properties → Uncheck "Read-only" → Apply to all subfolders. Run i68 Controller as Administrator.
FIFA 15 was released in 2014, the last FIFA game to use the older Impact Engine before EA switched to Frostbite with FIFA 17. On PC, FIFA 15 still used a file structure inherited from FIFA 11-14: a mix of .big archives (compressed containers) and loose files. The .bh files act as a master directory. Unlike later Frostbite FIFAs (which use different mod-loading methods), FIFA 15 has no built-in mod loader or live file scanner. Thus, the regenerator is mandatory. fifa 15 regenerator
Even EA’s own updates (squads, title updates) modify these index files. When modding, you essentially force the game to recognize your custom files as if they were official updates. Cause: Windows UAC (User Account Control) or folder
Can you regenerate without a tool? Technically, yes, but it is archaic. Can you regenerate without a tool
FIFA 15/Game/data/db folder.fifa15-file-loader.exe (a command-line tool) to manually rebuild.Verdict: Do not do this. The GUI tools exist for a reason. Manual regeneration has a 70% failure rate on Windows 10/11.