MIT App Inventor wont let 2 of my students access their code

Bugs and Other Issues
1

I have a class of 18 students who are working in App Inventor. 2 students(who are the best coders) can not access their work or transfer it to a tablet. They get the message - ooops we have stepped on a bug.

We have restarted their computers, and made sure it was up to date on all software updates and it still will not work.

We were planning on presenting the apps tomorrow.

2

If you send me a private message with some of the account names we should be able to take a look and see what's going on.