Here below is a screenshot of the production release at musicblocks.sugarlabs.org. The application crashed at loading. However, it loaded on refresh, albeit with a few errors and warnings again. I have had this issue several times before, on multiple devices especially mobile ones. This is a bad thing!

Most of the stuff here looks like an issue with the asynchronous loading via RequireJS, which actually would mostly happen when loading from a remote server, so these things aren't often reproduced during local development. #2629 is therefore a priority.

#2614, #2615, #2618 address the problem. Crash errors are the priority.