64-bit driver filter that you could try but I'm skeptical that this is the issue -- the driver actually
processes sequentially so super large buffers are not needed. Print-Tool is 64-bit and does
use large buffers but "filter failed" isn't likely there.
What I really need is very specific details of the printing you are trying. Screen captures of
Print-Tool window, QTR driver window, details of the file itself would help. Also more detail
in the exact message and when/where you see it. /Applications/Utilities/ Console logs of the failure
messages would be useful.
Roy