We have one application - CCH's PROcap (accounts preparation software) that
refuses to print one type of report with iPrint. If the same printer and
same driver are installed via NDPS, everything is fine.

I've tried the latest (beta) iPrint client, but the same thing happens - the
application hangs 'printing' page 1; the system tray icon reports "Document
failed to print" and nothing appears on the printer.

Any suggestions? I have iPrint trace and error logs if they'd help. Back-end
is NW6.5SP2, btw.