This morning I imported an image through the resource manager working on the Art Gallery practice project. I implemented it, and everything worked great. Saved the project and shut things down for a while. Now that I've just come back to it, the project would crash on every attempt to open, and it was apparently because the image reference came back null. Somehow, the image, though still in the resource manager and corresponding explorer directory, was an empty container - 0 bytes. What would cause this to happen? Is this an android studio thing or a my computer thing?