I cant get the teleporter to work. Is it broken or something? I did exactly as in the wiki. Put 9 stable stone (see picture) and placed it from the same direction of the picture. But it won't work. Any thoughts?

How did you configure them inside. When a connection is established the green holograms will appear

I gave them both a name, Portal1 and Portal 2, and after that i choose the destination.

Strange, sorry to hear it's not working for you but I won't be posting fixes since I don't develop for 1.7.10 anymore