Check what file type is present. If you have e_text.afs (English) but lack s_text.afs (Spanish), copy e_text.afs and paste it into the same folder. Rename that newly pasted duplicate file to .
If you downloaded a "Full" pre-installed version or a patch, the game doesn't know where it's sitting on your hard drive. You need to update the Windows Registry. Press Win + R , type regedit , and hit Enter. afs file not found pes 6 full
: User Account Control (UAC) blocking the game from reading its own folders. Check what file type is present