Upgrade from testing to stable by CD

[Tim Boregard <helycos@lycos.co.uk>]

Hi folks,

I have a problem with apt-get upgrade.  I have the stable Woody CDs, and 
have added them to my sources.list, and commented out the entries for my 
testing Woody CDs.  On running apt-get upgrade, I get the following message:

Sorry, but the following packages have unmet dependencies:
libgtk1.2-dev: Depends: libgtk1.2 (=1.2.10-9) but 1.2.10-11 is installed.

And running apt-get -f install,

E: Invalid archive signature
dpkg-deb '/cdrom//pool/main/g/gtk+1.2/libgtk1.2-dev_1.2.10_11_i386.deb 
is not a debian format archive.

Does anyone have any suggestions?  I avoid using the web for downloads 
as I'm on a dialup.

TIA,
Tim