We just updated the SDK and the documentation.

This release includes several fixes that will improve the reliability of an apps connection to sencha.io. We encourage you to update your applications as soon as possible.

http://docs.sencha.io/0.7.8/index.html

http://download.sencha.io/sencha-io-0.7.8.zip

The release notes includes the list of changes since the last release:
http://docs.sencha.io/0.7.8/index.ht.../release_notes

Post to the forum, or email support@sencha.io, if you experience any problems.