If you are running a patch or mod using , the error might be caused by a missing folder inside the kitserver directory:
The error in Pro Evolution Soccer 6 (PES 6) is a classic technical hurdle for fans of what many consider the greatest football game ever made. This error typically occurs because the game engine cannot locate or read its core data containers—the .afs files—which hold everything from player textures to stadium models and commentary. Understanding the AFS Architecture afs file not found pes 6
First, verify that the files actually exist. Navigate to your main PES 6 installation directory (usually C:\Program Files\KONAMI\Pro Evolution Soccer 6 ). Open the folder. If you are running a patch or mod