You need to edit admin/GForum/Config/Data.pm, and look for paths or directories containing gforum-0.9.4; if you change them all to gforum and move it over, you should be running perfectly well at the new location.
Jason Rhinelander
Gossamer Threads
jason@gossamer-threads.com
Jason Rhinelander
Gossamer Threads
jason@gossamer-threads.com