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Deleted Navmesh


alexbeugelsdijk

Question

I've installed a new mod that deletes vanilla navmesh and replaces it with its own. I've heard deleted vanilla navmesh can cause CTDs and indeed I have experienced crashes when I've gone to the area the mod affects. I've read that to fix this you can use tes5edit to restore the deleted navmeshes in the mod esp, and then in creation kit drag those navmeshes below ground so they won't be used by npcs. I've been trying to do this and am having real issues finding the single triangle navmesh in a gigantic exterior worldspace and also my computer becomes extremely slow in navmesh mode. I'm wondering can I just set the unwanted vanilla navmeshes to "initially disabled"?

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I'm finding a lot of the mods I use that add to / modify worldspace have deleted vanilla navmeshes and are causing CTDs when I enter the areas they affect. Using tes5edit, I am able to find the vanilla navmeshes they have deleted and the new navmeshes that they have added. Usually, it looks like the new navmeshes are just a modified version of the vanilla navmesh. By changing the formid of the new navmesh back to that of the original vanilla navmesh, I am able to "restore" modified versions of the vanilla navmeshes. This guide was a big help: https://www.afkmods.com/index.php?/topic/3337-skyrim-fixing-navmesh-deletion-using-tes5edit/

 

I'm pretty confident that this should work, since after changing the formid, and comparing the navmesh records between skyrim.esm and the mod in question, there is a high degree in similarity of vertice and triangle data with many of them identical between vanilla and the mod. Of course, there may also be added triangles or deleted triangles based on the changes the mod author made to the navmesh. Anyways after doing this method of changing formids to undelete navmesh basically, I was really hoping this would solve my CTD problems, unfortunately they did not. I get a CTD moving from solitudedocks02 to eastempirewarehouseexterior like clockwork.

 

The problematic mods I'm working on now are solitude docks district and complete solitude. By themselves only, either mod works fine. However, when I load them together, the CTDs happen and they are not dependent on load order. This is despite the mod author of complete solitude saying that his mod was made to complement solitude docks district and recommending that they be used together. It is worth noting that complete solitude also has the majority of the deleted navmeshes in the region of 15 or so.

 

I'm wondering if anyone else has had this problem and found a solution for resolving deleted vanilla navmesh. I found this guide

https://wiki.tesnexus.com/index.php/How_to_merge_two_hundred_mods

it seems like the author is trying to achieve the same thing as I am right now, but I haven't heard of the program GECK or anything. Any thoughts/suggestions would be appreciated.

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