Level by @dwhittaker - on load screen progress goes up to about 1/3, then a popup saying:
Infinite Loop Detected
The initial code to build the world never finished running. It’s probably either really slow or has an infinite loop. Or there might be a bug. You can either try running this code again or reset the code to the default state. If that doesn’t fix it, please let us know.
It gives thee buttons: “Try Again”, “Reset Level”, and “Comment Out My Code”. None of them do anything.