Interesting linefeed problems

[Brennon Church]

I have a cups/samba setup that I'm using to serve printers to Windows 
and Linux clients.  I've found that I get an extra page and a postscript 
error whenever anyone prints from the Windows systems through cups/samba 
to one of my printers.  After dumping the jobs out to file and comparing 
everything, it's come down to an issue with newline termination of the 
postscript file that's getting sent to the printer.  If the file has a 
newline character at the end (after the end of transmission ^D character 
at the end of the postscript data), then the file will print without 
error.  If it doesn't, I get a blank page and the following:

ERROR: undefined
OFFENDING COMMAND:   userdict

STACK:

This is occurring on a Xerox Phaser 6250DP, and it only happens if I'm 
printing through cups from Windows.  Printing directly to the Xerox from 
Windows, using the same drivers as through cups/samba, doesn't give the 
error.

Additionally, sending the same postscript file without the newline in it 
(the inclusion of which causes the error on the Xerox) to my other 
printer, an HP LaserJet 5si mx, works fine, without the blank and error 
pages.

Has anyone else run across this problem?  I've been searching but 
haven't yet found anything that quite matches this.

Thanks.

--Brennon