Don,
Got excited there for a minute when you mentioned that CR will use the default printer if none is defined or if the one defined is no longer available.
I am testing this on my own workstation, not at the client site. yet. It does have a network-attached Brother MFC defined, but I've had CutePDF set as default. I changed the default to Microsoft XPS Document Writer but it still hangs on the second invocation. It's stayed hung for the five minutes it has taken me to type this reply.
I'll probably need to test this from a clean(er) machine to see if it is somehow connected to old settings on this workstation. Unfortunately I don't have any other x64 machines available.
Mark Berry
MCB Systems