Script Editor Causing Lock-up

[Archmagister]

I have a serious problem with the script editor, and haven't been able to find a solution on the forums so far.
I want to run some unsigned scripts, for which, if I understood everything properly, I need to have the script editor enabled. Alright, so I install the script and enable the script editor in-game with "Thereshallbewings", then save the game.
HOWEVER, when I try to load from that savegame later it simply freezes on the loading screen. The game locks up so badly I have to manually reset my computer.
Even if there are no scripts installed, and I load a "clean" savegame, just enable the editor then save again and try to load it locks up. I am really totally baffled here, since nobody else seems to have the problem. Am I missing something incredibly obvious?
I'd really like to get this resolved, because right now I can't run any unsigned scripts because of this issue.
My game version is 1.4, with bonus pack installed.

[moggy2]

There seems to be a problem with one of the scripts you've installed.

When the game loads it runs all the setup scripts in the script directory. One of them will be causing the lock up.

[Archmagister]

Well the thing is that I'm quite positive there are no unsigned scripts installed and it STILL freezes with editor enabled.
I went to double check after I read your post, just to be sure, and fine-combed the scripts folder file by file with the script rar file opened(it's the Race Response Fleets, by the way), and none of the script files are there.

That was the only script I tried to install, so the only logical conclusion is that something that was in the bonus pack is causing the problems.

How relevant is X2script.xsl file? I've noticed that if I remove it everything still seems to run fine, but the game still locks up if I enable script editor and save/load.