I had the same problem.
For some reason, the Debian package wasn't installing
/etc/hp/hplip.conf.
Adding that file with the following contents fixed the error, so the
HPLIP utilities could find the models.dat file.
[hplip]
version=3.21.2
[dirs]
home=/usr/share/hplip
--
You r
Dymo themselves at
http://www.dymo.com/media/UserGuides/DYMO_SDK_for_Linux.pdf
say LabelWriter 310 will only work when connected to a Windows computer,
because it has non-standard USB support.
Labelwriter 400, 400 Turbo, DUO, Twin Turbo, 300, 330, 330 Turbo,
LabelMANAGER 450 and LabelPOINT 350 w