If you see a casVer in the package name, it means the package is a main file of the custom traits pack and it is the Personality (CAS) Traits Version.
(or a Zer0's Override folder if you understand what it is.) Do NOT Remove the ! in the name. You need to put it DIRECTLY in your Mod folder. If you see a ! at the front of package name, it means it is an override of other mods.
If you choose to install it, check the mod download requirements to make sure you have already downloaded all the main files and required mods for this addon to work. If you see an addon in the package name, it means it is 'a mod for a mod'. Only ONE option should be installed from More CAS Traits! If you see an Option in the package name, it means you need to choose ONLY ONE package of that mod ! E.g. The V (some numbers) are the updated VERSION NUMBER of the mods and you should download the up-to-date version of the mod and delete all the outdated versions.