Server boots players off if more than one player is active while this mod is installed.

I'm working to update the WizCoins mod. For some reason when I log onto a server with the mod on it and someone else is on the server, it kicks both of us off while the server stays online. I'm not too sure why it does this. I originally thought it was because the variables were set to global, but I switched them to be player specific and it still produces the same error. Anyone have any ideas as to why?