Format for convert command.

john Culleton <[email protected]> Sat, 24 Sep 2011 11:20:05 -0400
Newsgroups gmane.comp.video.image-magick.user
Organization WexfordPress
Message-ID <[email protected]>
I use ImageMagick infrequently to convert from RGB to CMYK color model.
This line gives errors:
convert 9781600191022.MAIN.jpeg -colorspace cmyk  foo.tiff

Can anyone spot an obvious error?
-- 
John Culleton
Wexford Press
"Create Book Covers with Scribus"
http://www.booklocker.com/books/4055.html