Trapping ON/OFF

[Heather]

I have a 4 color brochure set up in Publisher 2002 and it
has all of the color bars, crop marks, etc. and when I
goto Commercial Printing - Trapping - I turn the trapping
on and change the default to what I need it at for our
printer, and then when I go to print, I get an error
message saying it could not print.

Why does turning trapping on make the file not print?
Is there a way to fix this?

Thanks.

 

[rich sweeney]

Is the printer setup pointed to a ps printer?