10.07.2015, 13:24
If you kill yourself then killerid is INVALID_PLAYER_ID (65535) and thus out of PlayerInfo bounds. The rest of your code will not execute because of that.
Before you modify PlayerInfo[killerid], make sure that killerid is not INVALID_PLAYER_ID
Before you modify PlayerInfo[killerid], make sure that killerid is not INVALID_PLAYER_ID