I was recently running around in game looking for suitable areas to place various house mods, when I reached a point in a particular cell where the game ctd. At the time I had all 5 housing mods active in data files, so I began to eliminate each in turn and eventually worked out which mod was causing the ctd.

My problem now is that I am unsure how to figure out what I have done in the mod and then how to fix it. I have not altered any exterior world cells in the mod.

Any help is greatly appreciated!

Navmesh bug.

Nothing you can do. You're stuck until Bethesda sells enough DLC to warrant fixing the issue.

That doesn't sound like the navmesh bug. A Navmesh stored in an ESP will only load once and after you travel two or more cells away, it won't load again until the game has restarted. This prevents your followers and other NPCs from appearing or moving wherever that navmesh is used. This is the navmesh bug I'm familiar with anyway. There is http://www.gamesas.com/topic/1367191-navmesh-bug-discussion-thread-4/ about this though.


That's the biggest thing. The vanilla exterior does not take kindly to edits so if you need to change something, you have to use an ESM/ESP combo.

But are you really sure you didn't change something inadvertently? You might need to scroll through the records of your mod in the CK (a process that Amethyst Deceiver describes http://www.gamesas.com/topic/1375579-dear-bethesda-is-there-a-way-to-reset-a-cell-to-normal-and-if-not-can-you-make-one/page__view__findpost__p__20808924) or in a utility like http://skyrim.nexusmods.com/downloads/file.php?id=5064.

You can always pray for a miracle fix (really, it does happen!) by copying your house cell within the CK and saving it to a new ESP. The CTD may go away for no reason.

Thanks for the replies

I'll try copying and saving to a new esp first and if that doesn't work I'll go through the mod records.


Edit - I ended up going through mod records first and scrolled right down the bottom, there appeared to be a bunch of items which were not related to my mod. Deleted/ignored all of those and it's now working! When I began looking for areas to place houses, I was doing so in the CK but I kept losing my bearings in wilderness cells so I gave that up and went to ingame instead. I thought I was being extra careful not to move things in the cells but maybe I wasn't being careful enough!
Anyways, it's fixed now, thanks very much for your help.

Figured that would be it. Can't tell you how many times I've opened up that list and been .... WTF! Why is that changed?!? *lol*

I'm not going to jump on you like I probably should, but just know that the 1.6 patch fixes the navmesh bug.

*lol* Not everyone is a really devoted fan like we are, AV.