Huh, now that IS weird.
I'll take a look through in FNVedit, try to see what it uses other than creatures. See if there's anything obvious that's causing the CTDs. If I can't see anything, I'll PM the author and ask what's up.
For Some Reason the next reply needed it's own thread. --TJ
Edit - Sorry TJ!
---------
Well, after a lengthy discussion in chat with paragonskeep, I've decided to post a topic about this, since neither of us can conceive of a solution to it.
The current version of MoMod (10b) is causing CTDs just before main menu load. I have absolutely no idea why, though; it's not a missing master issue, and I see no reason why MoMod should change XMLs. The only solution I can think of is that MoMod radically alter's FO3's legacy content in NV, which (naturally) TTW relies upon to run properly. But I have absolutely no idea what I'd be looking for.
I can post LO later if you guys think it'd help, but I don't think this is an LO issue - I've seen several people on the Nexus saying that they've got this same issue with 10b and TTW. However, I do believe that I heard that 10a and previous versions work fine with TTW - not sure about that. If anyone with 10a or previous MoMod could confirm, I'd greatly appreciate it.
Anyway, I'd love it if anyone with more modding experience here could work out what the issue is - even if it can't be fixed, the scientist in me won't let this go. Failing that, I would greatly appreciate it if someone with MoMod 10a would be kind enough to post the FOMOD here for us mere mortals to use.