Some of the newer editions of Creatures install catalogue files in an odd place, and the Garden Box needs the catalogue files to be in the correct place.
Because I run Creatures Exodus on my Mac, I look in my
~/Library/Preferences/Creatures Labs/Docking Station/data/Catalogue folder for new catalogues, and move them to
Hard Drive/Applications/Docking Station/Contents/MacOS/data/Catalogue.
If you're on a PC, you'll want to look in My Documents for an analogous Catalogue folder, and move it to something like C:\Program Files (x86)\Gameware Development\Creatures Exodus\Docking Station\Catalogue.
Amaikokonut discusses it in more length in the sticky thread - hope this helps!