Unity3d Sprite Mask Nonexistent in Build

Unity3d Sprite Mask Nonexistent in Build

I am developing a 2D game which uses sprite masks to limit the player's information to a circle around them. The feature works perfectly in the Unity Editor. It can be disabled and reenabled, have the shape of the mask itself change, and more. 
However, whenever I build the project and run the executible the screen is blank. If I disable the sprite masks altogether, the sprites are all visible. I have debugged Unity3d builds before, but that was specifically looking at variables as they changed during the execution of the program.
Does anyone have any specific knowledge related to sprite masks or have any idea why this would occur? I can provide more information if necessary. My current thought is that the sprite mask is masking everything for some reason. It's weird to me though that it would only break in the build.
All help is appreciated.

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