OK, that means my useless comment was *really* useless ;-) Still, a bit puzzling. If it crops up again when I'm not in a frenzied rush, I'll look into it more. seb * Brad Clements <bkc@murkworks.com> [010718 22:49]: > Hmm. I had to add this line to the custom python script > > file=context.REQUEST.file > > Seems that whomever is calling the custom image_edit isn't passing a file argument...