Mac printing error on Xerox WC 7120

Recently I bought a WC 7120 and I installed it in every pc on the network and works great, but in every MAC I installed, the driver stops working after a while, and the printer screen displays an error number, error 016-573. I've searched all over the internet and already ask to the seller but nobody knows what this means. I installed the driver from the installer in the cd, the printer has a static IP, and only mac computers got the error. Can you help me?
