I found this on the Adobe Forums:
Extra pages: This is a problem that several apps which generate their own PS seem to run into under NT4. They use the system's PS driver as a "pipe" to the printer but send their own PS, not the system's, down the pipe. Unfortunately, NT insists on adding its own two cents worth at the end of the job. It doesn't affect the printout, but makes the printer think that the job isn't over yet, that there's more data to come. So it waits. And eventually times out. And prints a timeout error page.
You may be able to set the jobtimeout to 999 (as I recall, that = infinite ... wait forever, so it never produces a timeout error). You'd have to do this at the printer's control panel or via PS sent to the printer.
You could probably also just set the printer NOT to produce error pages by default.
*****************************************
Red, White & Blue: Colors That Never Run!
Kristina McCook
Senior Logistician
CACI - Automated Sciences Group, Inc.
*****************************************