HP LJ MFP M477fdn not working with Linux Mint v18.2

So I had our HP Color LJ Pro MFP M477fdn working at one point on my wife's computer using Linux Mint v18.2, then suddenly it errors printing graphics. It prints text files just fine.

Printing the test page from the printer properties prints one blank sheet followed by a second sheet with:

ERROR:
undefined
OFFENDING COMMAND:
image
STACK:
--nostringval--
-mark-
-mark-
-mark-

$ dpkg -l hplip
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-=====================-===============-===============-===============================================
ii hplip 3.16.3+repack0- amd64 HP Linux Printing and Imaging System (HPLIP)

$ dpkg -l cups
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-=====================-===============-===============-===============================================
ii cups 2.1.3-4ubuntu0. amd64 Common UNIX Printing System(tm) - PPD/driver su

Any thoughts?

Thanks,
-Brad