Hello, I seem to be getting a constant CTD in my RTS-NV town ( just a few shelters ) near jacobs-town while placing wooden walls. Any ideas on how to fix this issue? Here's my load order:

FalloutNV.esm
Fellout.esp
Brahmin Bess.esp
WeaponModsixpanded.esp

Total active plugins: 4
Total plugins: 4

I occasionally got ctd's before, but only very rarely.

Hmm... There is no exact solution for CTDs. When did it start to happen much more?
But you may try these:

- Create a merged patch via FNVEdit.
- Try to use FNVMasterUpdate.
- Use NV Stutter Remover. (It requires NVSE.)
- Delete your fallout_default.ini file then verify the game cache via Steam.

Here are the links:

http://nvse.silverlock.org/
http://www.newvegasnexus.com/downloads/file.php?id=34832
http://www.newvegasnexus.com/downloads/file.php?id=34703

Is there anything like WryeBash to "Clean" all the crap out of a save yet?
I know that in Oblivion when my game starts CTDing a lot, running a 'Clean' on the save fixes a LOT of stuff.

I've also noticed that the farther you get in FO3 and FONV and the more things you've discovered, collected, quests finished
etc, the "crashier" the game becomes.

So, I'm suspecting that a lot of garbage starts to accumulate in the save files.

CASM has reduced my CTD's by at least 80%, but as I said, the farther into all Bethesda games I get,
that use the Gamebryo Engine, the crashier the game becomes.

Not sure if this will help in your case but did wonders for my CTD sitch =]

http://www.newvegasnexus.com/downloads/file.php?id=36805