Hi folks. There seems to be problems with the App Inventor server.
Sorry for this, we'll try to get it working again as soon as possible.
We will be transitioning to the MIT App Inventor server as we just got
accounts. Your account should work at
experimental.appinventor.mit.edu. You may try it or you can wait for
the usf service or more instructions tomorrow.
I apologize and you will of course get an extension on this project.
Dave
p.s. if you try the mit server, you can upload a zipped version of
your project into it by going to More Actions | Upload Source and
choosing the zip (of course you'd have had to download source prior,
and you may not be able to do that on the appinventorusf site now).