also I once inserted the cartridge in a manner inconsistent with proper guidelines.
The carriage shakes and shudders to scare you into submission.
Then it conveys a weird message that is fixed upon reseating correctly.
I would make absolutely sure the cartridge in question is seated properly before proceeding with anything.
Then,
since you can replace the print easily enough, unless it is a one off or something,
cancel all print jobs both in the driver, and color center controls,
on the front panel of the z and on the computer(qimage or whatever)
make sure you cancel all jobs.\
Then do a hard restart, disconnecting the computer from the printer
Start both alone disconnected.
If it all works right,
turn off the computer connect the usb, and off you go I'll guess.
I have had numerous issues that I solved each time by following this protocol.
When it wouldn't resolve, it was a bad formatter.
Not to say I think that I know what your deal is, I don't.
But a hard restart cured 99% of issues I've had similar to yours