So today I was playing some infection and during the first round I noticed a strange glitch. When I tried to shoot a zombie, the reticle turned green, signifying it was an ally. I could shoot him but he wouldn’t die. He can lunge and hit me with meele attacks, but I couldn’t die. Ther were some zombies that I could kill. So finally, I am last man standing and most of the zombies were being identified as allies by my reticle, but as enemies by my radar. There were very few enemies that I could actually kill and be killed by. Does anyone know what this problem is and how it might have been caused?