All the DLCs work just fine for me. At best Zeta only has some scripting errors, so trying to push the "My game crashes because off..." card onto Zeta us complete bull. There are many reasons why your game could be crashing, and proof of that is the fact that the game DOES still crash for you.
I cant even remember the last time Fallout crashed on me...
Fallout 3 has always crashed for me (Quad Core), but with Zeta installed it crashed every 10 to 15 minutes. :shrug:
What happens is when in combat, there will be a noticeable frame rate stutter, then it locks up.
(it happens with or without loaded mods ~other than the DLC)
I think what I'll try to do is find out from the Wiki where that DLC begins, go there, then enable it and play from there.
I haven't noticed any crashing that I could link to any particular DLC. One thing I do that seems to help crashing overall (you might want to give it a try Gizmo, if it isn't already one of your regular habits) is periodically waiting/sleeping in game for 3 consecutive 24 hour periods. That should allow all of the game's resettables to reset and, besides reducing my crashes, seems to improve performance for a time.
This also seems to help with Morrowind and Oblivion. I don't
think it's my imagination, although one never do know.
Edit: Damn, I just realized this topic is old news. I'd better get some coffee in me.
That's something to try. I usually have only done that when reverse Pick-Pocketing Enclave Armor to BOS knights (see SIG link).