You need last version of Skyrim (1.9.32.0.8) and Dawnguard

Description:
This mod replaces Nightingale Armor enchantment with a new.
I thought the armor could use a slight upgrade in the assassining category.

-Nightingale Armor - Increases Poison Resistance by 100%.
-Nightingale Boots - Wearer is muffled and moves silently (35), increases magic resistance by 35%.
-Nightingale Gloves - Double sneak attack damage with One-handed and Ranged weapons.
-Nightingale Hood - One-handed and Ranged attacks do 20% more damage.
-Nightingale Bow - Fires 30% faster than a standard bow. (Base damage increaset to 20).
-Nightingale Blade - Absorb 20 points of health and stamina. (Base damage increaset to 15).

THINGS THAT WORK NOW:
-The armor itself functions fine.
-Enchantment functions fine.

THINGS THAT DO NOT WORK NOW:
-None

Versions:
1.0 - Initial release.
1.1 - Improved Nightingale Bow and Nightingale Blade.

If anything in this mod is not working, place it LAST in the load order.

My other mods:
Improved Keening - http://www.nexusmods.com/skyrim/mods/48596/?
Jurgen Windcallers Armor - http://www.nexusmods.com/skyrim/mods/48253/?