[Custom armor nif crashes GECK]

This is most likely the culprit. Remove everything from your NiTriShapes that isn't Has_UV and Has_Tangents. I suspect it has to do with your export settings. Would you post an image of them?

Thanks for reply, I'll give it a try and post the screenshot as soon as I get home.

[Custom armor nif crashes GECK]

So I've made a small armor mod by modifying some vanilla assets, but whenever I try to open it up in GECK, it just crashes. I found a couple of old related topics here, most of them say that node or mesh names might be wrong, but I checked everything thrice and it's all fine and different. What can I do to fix it?

 

https://www.mediafire.com/file/artxcm3l6zmlsox/customcoat.nif/file

[Replace the NCR duster texture with the one from Desert Ranger combat armor for Courier Six Armored Duster mod]

So here's the mod https://www.nexusmods.com/newvegas/mods/58137. There are several files in it, and I need this for the "Default" version. I think that ncr veteran duster looks out of place there and want it replaced with the one from desert ranger combat armor from Honest Hearts dlc if possible. I tried to do it myself but it appeared to be way harder than it seemed. Thanks in advance.