I've downloaded this mod several times. First time, it failed to let me go anywhere or continue after Synda died. Second time files never even had any information because of a unknown reason. Third time, the damn thing crashes everytime I step into the cell -3,-9 by the foreign quarter so I can reach Ebonhart. If anyone knows why it would do this please let me know. I can't find any reason besides my computer wants to be stubborn and fight with me. This is a great mod and I'd love to enjoy it and it's story. If I could actually play it for once after two years.

that one is one of the most complex mod ever made. I unloaded all the mods I was using, to play TU2

My best guess is because I tried to go past that and got the biggest Frame hit of my life I think it's because of my number of mods the water is hitting the frame rate to hard and I'd just rather give up on it then anything. I had a Nevidia 500 then it was sold without my permission so I'm running off a stock dell gateway video card that can't do crap. I wanted to come back to it because it was my longest lasting game, but when there's nothing for my character to do it's kinda pointless.

Have you tried huskobar's http://www.gamesas.com/topic/1060060-the-underground-2-patch-project/? I haven't myself but it might help. The most recent is "UG2PhaseC_v07.rar"

There's also http://planetelderscrolls.gamespy.com/View.php?view=Mods.Detail&id=9053, which is distributed (for some reason) as a binary diff. Some people haven't been able to get it to work.

Hmm, I don't recall anything about the Synda dying problem, but the patch should definitely help with the crash near the Foreign Quarter. (It's caused by a script disabling a certain corpse then attempting to delete it right away. The patch should fix that). Note that the patched version is not complete but it should go a long way to making the mod a lot less buggy. Make sure to uninstall any previous version your're using.
It IS a fantastic quest mod indeed.