Does anyone have new AI scripts, or know
where to get them?
I have tried making my own, but I lack
programing skills - my AI aliens desided to build 34 level 6
planets in one sector, and invaded Terra [xx(]

Sounds like the first thing you need to do is learn a little more about the settings for the TWGS. I have never heard of terra being able to be invaded by anyone, especially aliens, and especially if the game is set to restrict aliens from entering fed space.
Second thing, unless you have a script of some kind running to make changes to your TWGS while its running, also not advisable because it causes corruption in the games, the aliens cannont make planets, they cannot get gen torps, they cant get anything from stardock, especially if they are restricted from entering fed space.
The alien AI modules have not been released for TWGS yet and if there are people making changes to their TWGS by way of scripts, like TWX, they are very few because I have only seen 1 ever and it no longer runs. I am sure it can be done but I wold leave that type of script writing to the scripting Gods like Cherokee, SupG, Exide...etc. I am pretty familiar with the ins and outs of a TWGS and host my own but I still check and double check all changes I make and I dont trust a script to do that for me.

Well, thank you for the help.
My game did crash...
I reinstalled TW after that, but I still have that
bug, where one of my Alien races build planets.
Take a look in one of my games - Game Y, sector 14453.
That sector has more then 5 planets and still has stable planetary mass.

Game Y appears to be massively corrupt, it will not allow new players in. There is not even an error message.

I just fixed it.
The storm messed a few things up.
Every thing is back to normal now.

I take that back. The files a just replaced have been overridden by
the corrupted ones somehow. I am Sorry, I will have to Shut the server Down
I am woking on a new TW project - I will have a new domain and faster machine to run TW on,
along with few other games.