Lexmark Inkjet Issues

I am trying to use this with Lexmark Z615 (Z600 driver), but I can't even make a virtual printer because when I hit finish, it installs with the Lexmark driver and when I launch my print jobs, it says "Incorrect Port Detected", "Cancelling your print job".
I have used this successfully with HP's with no problem. Any Lexmark advice besides donating it to the landfill??
Thanks,
Dave

oh yes, I have disabled bi-directional support on both real and virtual printer.

Unfortunately that driver seems to be hard coded to the USB port. I don't think there is much we can do about it.