From Shadow Warden armor to Warden Assassin Armor

[NWelf]

I Had installed Shadow Warden Armor originally, no probs there, but then I came across Warden Assassin Armor set and liked it too, so like a newb I tried to install it too. It gave me the .dazip already exists error, so I went back and read somemore and realized they used the same armor textures, just slight variations of eachother. So I went back and uninstalled the Shadow Warden Armor and deleted it from my DAO Modmanager and tried to install the Warden Assassin Armor, and I still got the .dazip already exits error. SO my question is how do I fix this cause I want to have the Warden Assassin armor instead of the Shadow Warden Armor. And even reinstalling the Shadow Warden Armor doesnt work now, gives the same .dazip already exists error msg and nothing gets installed.