Asset won't work once project is built?

It works fine in play-mode, having an absolute blast with this tool, but once I build the project it doesn't work at all. 

Notes:

Convex mesh collider.
InkCanvas attatched to all paintable objects.
Collider Painter attatched to object I want to paint with.

Please advise! I am loving this tool and really would love to get it to work!