The button for the curtain dosnt work. I think this maybe because there are two error sign at the side of it. This may a motor or something I guess. Thanks Jamie. :)

Yeah the 2 error signs are supposed to be a motor... However those are static props and that can't possibly be a cause.

Couple of things for further troubleshooting:
1. Are you a traitor when you test this feature?
2. Do you see the traitor button overlay (the floaty thing with the red text saying "Raise/lower curtain")?
3. (This is the most likely cause, since as I type this I'm looking at the I/O chain in question and see no issues) Are you pressing the actual traitor button and not just the button model? (Although I put a button model on the wall, the actual button entity is a ttt_traitor_button sitting directly in front of the button's model, key difference is that the traitor_button only appears to T's, whereas the model appears to all)?

And also, just in general are there any other missing textures/models?

Thanks for the feedback (and for making use of this discussion! :D)

So what do I need to do I dont get the traitor and I dont get the overlay?

Load the map up in singleplayer, with the gamemode set to TTT.
In console, type these commands:
sv_cheats 1
ttt_debug_preventwin 1
ttt_minimum_players 1

Next wait for the prep time to end (I'm blanking on the command to shorten it) and then once the round proper has begun, you should be a T. If for some reason you aren't, type in "ttt_forcetraitor".

Thanks, and please let me know how it goes!

It worked thanks.