Stargate Gmod

I did what it told me in the readme but it seemed very vague but its not working. i dunno what it wants me to do. i downloaded through SVN and then did the export thing it told me but i get nothing in game in single player. whats wrong with it?

well, try uninstalling it and use this guide. it helped me alot with this kinda stuff:
http://www.facepunch.com/showthread.php?t=688324