This has happened to me as well.It happens because there are some irregularities with skin color and faces sometimes.
try changing the faces of the changed/modified players to faces with numbers instead of named-faces (eg: For Kevin Pietersen, try changing his face to a face with a number instead of face-code "kevin_pietersen" and change skin and arm both to white (if its a white skinned player). and select black for both arm and skin and also a face with a number (eg: 09) if its a black skinned player.
*Kevin Pietersen was just an example, you may not want to replace current players and players like KP.however if you just changed the name of another player (a licensed player) change their faces (to numbered faces) and skin colors accordingly.
hope this helps.if not you may have to delete your user file and re-edit all the players.keep backups of your USER and USRSTAT files when you make changes)