Everytime that I close my app, it is still running but hidden (I see it when I open the task manager and see the process is still running), and when I double click to open the app again, that's when the error shows and closes the app.
"Uncaught exception: Error: Cannot find Module 'bluebird-lst'"
Make sure to close the app when closing your last window.
In your main.js, add something like that:
mainWindow.on("closed", function () {
mainWindow = null;
app.quit();
})