See the other thread you started. The shortname in apps.json needs to be the prefix for your files. So if you choose 'snakefish' as the id of the app all your app files would be called snakefish.app.js snakefish.img snakefish.json snakefish.settings.js etc.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
See the other thread you started. The shortname in apps.json needs to be the prefix for your files. So if you choose 'snakefish' as the id of the app all your app files would be called snakefish.app.js snakefish.img snakefish.json snakefish.settings.js etc.