Al'kesh bombing run-what is this?

You can´t fix something if you don´t know the exact problem It would already help if we knew, which unit/building/code etc. causes this problem, but the fact is, we don´t have any idea.

Dude, that is the point I don't understand! That's what this whole topic is about! Actually it is impossible that this happened and this is also the first time, someone said that the game did NOT crash, when the AI is using the bombing run...

Yes, but our coders ARE experienced especially in the codes of our mod and they didn't find anything

If it's that easy why don't you do it then?
McKay explained already to you that they don't know which tag causes the crash. You can try to take a look at every single line in each xml - which are about some hundred thousand lines in total.
If it was so easy don't you think someone would have fixed that already?
Hope you got it now...

And you also can not compare AI and Players. AI-moves for example, are not based on restrictions for the player. For example, the AI doesn´t use a credit system, like the player, it "cheats". So it can be possible that the AI uses units that would normally make the game crash, if the player uses it.

Actually, as far as I know the AI uses the credit system (or something similar at least). The "cheats" only exist to help the AI and can be removed and the AI will still do all the things it did before (it'll just be weaker).
To see whether this can actually help fixing the bug why doesn't somebody with the 1.2 and the appropriate modding skills re-enable the bombing run for the goa'uld and test it? If it still crashes there won't be any need to continue this line of thought because either the bombing run for the goa'uld works now in general or the AI did something special and it won't be possible to find out what exactly it did.