I created a new item in the Creation Kit to experiment with. I named it and gave it a new ID but when I tried to add it in-game using the console I got an error message saying script not compiled/saved and that it couldn't find the item in the ObjectID list. What exactly am I doing wrong? Do you need to script something as well? Thanks in advance for helping.

what command did you use to add the item to your character? and how did you determine the first 2 characters in the item ID? and did you check to see if your plugin is activated?

same issue here with my items/perks

Ah never mind I forgot to add quantity after :/ ... e.g player.addspell WhateverTheItemIDis 1. Also if you still have trouble the wiki says to replace the first 1 in the ID number with 2 or 3 or any number up to 9. This does work but may need several tries if you have many mods installed.

Wouldn't it be easier to just drop the item in-game with the ck so your character can pick it up?