Manual Sprite Animation Breaks After Building

Hi all. I am manually loading a sprite in a script and then flipping through each slice of the sprite in the Update function. This works fine in the editor however when I build the project the animation breaks. Any ideas why this might be happening?

BROKEN AFTER BUILDING



WORKING IN EDITOR

 

Ok turns out the sprites are loaded in order when in the editor, but are loaded out of order during build. Instead of just saving the array I am parsing the keys to get the proper index.