[Zope] FTP problems using emacs

I've noticed that I can FTP DTML methods and documents between Zope and emacs, but not other types of objects, such as SQL methods. emacs complains that the file exists, but can't be read, which is born out by the fact that the emacs 'dired' listing shows no rwx permissions at all set for these types of objects. Any explanation for this behavior? Dave Morrill