Doing Zip download and its still blank. I dunno if its just macbook being dumb or im doing something wrong when saving files. 
so you have the zip, which im assuming is what you downloaded from the internet. what is inside the zip? png+ avatars are saved as a .save format, and must be in .save format to be loaded. im unfamiliar with how macbook displays files, but does "movement1" have a file type? by this screenshot is looks like "movement1" isn't designated as any file type, so the computer doesn't know how to read it