Does anybody have any suggestions on how to fix the problem of my helmet that when I put it on it Crashes skyrim to the desktop?

- I used 3ds max 2012, nifskope and gimp 2.8
File size as a gimp says 4,000 kb

Did you get any errors when you tried to add the nif to the ArmorAddon?

Are you using the correct Skin Partition?

Compare your ArmorAddon to the vanilla helmet addons. Also check the Armor object itself too.

If those appear to be right, the problem is in the nif.

You may have vertex colors, but it isn't specified in BSLightingShaderProperty(Shader Flag 2), which will cause a CTD.