Need Help got a problem with unity

hi i recently got the Modern Ruins package
and i cant drag the prefabs into the game. so can some one please help me. my version is 3.5.6 so do i need to update to 4.0 or what?

so i cant drag them into my terrain but everything shows up fine on its folder nothings missing.

please help.

What happens when you try to drag them in? Are you dragging them into the “Scene” view? NOT the “Game” view?

what happens is that i import the package and everything imports fine. then what happens is i try to drag them into the scene view and it wont let me, it gives me that Do Not Smoke type sign.

Are you sure you’re dragging the prefab itself? Not the entire folder it’s in, etc…

Also, try dragging from the Project view into the Hierarchy view and see if that works?

yah ive tried that too. so really i dont know whats up with it.