Player on two teams...

I edited my players.dbf file to switch some players around. However, when I go in to the game...one of the players (A. McKie) is on two different teams. I tried to release him in the game, but it won't let me do it. I also tried to trade him off the team and it leaves his name on the roster. I double-checked the .dbf file and it only has him on one team.

Any ideas why this is?

check also the player ID, one could have the same number as McKie so you have 2 McKie