Im making an assassination level and i placed the resistance alpha from zombies 09 and it always says error in base/scenes at line 1906!
And on line 1906 it says addactor = soldier alpha beta
Or something like that and its done that with everyone i place in a scene! Any idea how to fix it.

Make sure that actor was predefined.

WAT? wat do you mean? How do i go about doing that?

Make sure that the soldier was Made and indexed before the scene.
[Find the soldier and make sure spelling is correct and that it loads before the scene]

Do i leave him in his mod or put him somewhere in the base folder?

What you want to do is edit the Lua file; at one point or another, it'll ask you to define which actor is placed, as well as the module in which that actor is defined. I replaced the Coalition actor with a DarkStorm Yuurei.