Adv Dublicator built-in functions?

how about making the Adv Dublicator a part of the game like an update because i cant get it to work, and i want to save/load maps, props and grouped-together-things so i can make them again when i have closed my computer (and opened it again…)

and i dont know if its already in gmod but i want a thing that can group things together like welding

and that thing about i cant get Adv Dublicator to work is that it just cant save/load my things but the other things work =S

my computer:
OS: Windows 7
uhm… just search for the other specs if you want… …

and i have put it in D:steam mappe/steamapps/my steam name/garrysmod/garrysmod/addons and also in Data…