I thought I was about to give up and ring you guys but instead I'll post this in case anyone else runs into it (it may already have been posted but the archives don't go back that far). NTEmacs 20.7 has an old speedbar.el in the lisp directory that will override your site-lisp load-path giving the load error - void variable:dynamic-tags-function-list. Apparently that's the only needed variable that does not exist in that old file. Just delete the old one, point back to your site-lisp package and go (easy to say after chasing it for a day).
