UI stripped of all sprites when switching project from iOS to Android

So I'm working on a project for my company which includes a build for both Android and iOS. We use subversion for maintaining our project. Upon cloning then switching the project over to Android I find that all the main scene UI has been stripped of sprites.

I've been trying for the better part of the day to pull things back down off of the SVN but have been unable to do so. The project builds, and runs, but sprites remain white. I also tried duplicating the project and folders, but oddly enough the app won't even start coming up with a typically ambiguous "AppNameHere has stopped".

I'd love to know if there was a way to re-trigger assignment of missing sprites as the project is simply too large to go through and assign them all by hand