It's a Postscript fault.
Assuming the paper is a stock that can be duplexed, try this.
File > Print > Advanced (1)
Set (2) to Send for Each page and re-submit, if it still fails, check the box for (3)
Hi, I am trying to duplex print on headed paper from the the bypass tray and it prints page 1 just fine, then sends a 2nd page with the following:
ERROR: undefined
OFFENDING COMMAND: DSCCOMMENT_PLACE_HOLDER
OPERAND STACK:
No idea whats going on with this - please help!