» Thu Jun 21, 2012 6:50 pm
I stopped using the CK while it went through the update (and rollback) phase - luckily, I just never started it during that brief time - so IDK if it may have caused your issue. As far as I know, the up to date versions of CK and game are now compatible, but if you were modding during the bad-phase then bad things may have happened (search will find out threads from a few days back on that one).
However, Navmeshing in exterior cells can be a nightmare - especially if it effects the border-region of a cell (unless a fix has happened, you'd need to search on here for navmesh and you should find the BIG topics on it). So, if I were you, I would have a look at those topics. If you are CTDing when you try to approach the exterior door, it doesn't matter whether the interior is navmeshed properly or not, you gotta try to fix that.
IF you get that fixed up, then I'd also suggest trying the Auto-Load doors from the Wiki Tutorial, at least that will eliminate another potential cause (or use the same door as you have in previous houses, if they worked and your morally against the one in the Wiki)
Best of luck, mate - If it is an exterior navmesh problem, you're in for a bit of a time getting it fixed up.
As a tip, I have never made any changes to external cells (for load doors) that require me to navmesh an exterior cell. I always do as little damage as possible to the vanilla world space, just so stuff is as easy to implement as possible. I know that isn't always possible, but the navmesh thing always sounded like far too much work just to add a way in to a new cave.