HaloMods "Classic" Read-only Archive

All i did was try to make a box that i can put in the game, just to test and see if i could do it. Im stuck at exporting it, everytime i try to export it as a .jms file , it says: "There was no geometrey to export" , ad afterwards: "Export module failure". Any clues as to what is goin on? I have the frame, skybox and thats all i put in it, no bases! DISREGARD ALL THAT!!! I FOUND A SOLUTION!!!!

What is the solution!??!I've been stuck on that too!!!>_<

Ok well first you have your level "skybox" then you make another box named "frame"(no quote marks) then you link your skybox to the frame.