Unable to Open Project

I am unable to open or download my app project. The only thing that happens when I click the project I want to open is a loading message that disappears after a very brief moment, so I am not sure how to begin diagnosing this problem. Could I get some assistance with this? I really don't want to restart my entire project.

Thanks

  • How big is the app?
  • How many files are in the assets?
  • What file types?
  • Was the project imported from another builder?
  • Has the problem existed from the beginning? If not, since when?

This URL allows you to open AI2 to the Project List, without opening any project.
http://ai2.appinventor.mit.edu/?autoload=false
From that list, you can request Exports of Projects without trying to open them.
Upload the troublesome .aia here.

KingPong.aia (1.3 MB)
Here is the .aia file.
This project was not imported from another builder, and this is the only project I am experiencing this problem with.