I've got all the required dependencies (Linux is still dependency hell...

I ran all the diagnostics for HPLIP (V3.13.9) It all checks out. Nothing missing, all dependencies installed. Print queue
checks out.
I'm thinking the problem might be with CUPS and not HPLIP. It appears that HPLIP is sending jobs to CUPS.
I checked the queue by logging into CUPS and it says the print job is "stopped - filter failure".
Does that sound like a CUPS problem? Any idea on how to fix it?
By the way, my printer is connected to 192.168.1.100. It printed fine under Mageia 3.
Thanks & have a great day!
Lloyd