We recently just started seeing server errors for everything on the practice page. We aren't sure what's happened and think it's something the App Engine team just changed. Scott's working on a workaround. We'll keep you posted as we know more and/or fix it.

Sorry about this!

Scott has deployed a fix and things should be working again. Thanks for your patience during the brief server flipout.

This time was not possible to write when “Server Error (we are on it)” showed up.

As you said it has been for a really sort time.

Excellent support again.