The animation is not visible unless I remove the humanoid that's inside of the character. I've also already tried reinstalling studio. Could someone please try and see if it's not just me having this problem? Thanks.
https://youtu.be/2B7HEHX2wus?t=44s In the video, the animation worked only when the humanoid wasn't there. When I added a new humanoid after removing the first, the animation stopped.

3 comments
Could you show the script you used?
Trust me, there were no errors in the script. I simply loaded the animation into the AnimationController and had the track play. Since you ask though, does it mean that it works perfectly fine for you?
Are you loading the Animation from humanoid using Humanoid:LoadAnimation()?