Okay so I downloaded the Desktop Goose for my Mac and it was working great until I replaced the memes in his folder. When I started him back up he was only on the screen for two minutes or so before walking off, and he hasn't come back.
I'm having the same issue. I tried redownloading the app and it made no difference.
Is it PNG?
Is the file too big?
Is the resolution too high?
it could be happening if you have multiple monitors