GameObject Tags not working when deployed to Hololens or Emulator

Hi all,

I have a game object that scans the game world for enemies with the tag Enemy, but when it plays in the Emulator, it returns the exception that tag <Enemy> is undefined. On the Hololens device, nothing happens because it can't find objects with a tag. I tried rebuilding the entire enemy prefab and assigning it the tag Enemy again, but it did not work.

This all works perfectly normal in the Unity editor. I'm going to find an alternate solution, but has anyone experienced this problem before?

I can post screenshots if it would help find a solution.