We will be pushing a patch live tomorrow. Players will be returned to the title screen from their activities and then be required to log in to Destiny again after installing the patch.
Error Code: SQUIRREL
This error indicates you are not signed into your PlayStation Network or Xbox Live account.
Please sign into your PlayStation Network or Xbox Live account again. If the issue persists, check the status of your console’s network below. If no network outage has been reported, please start a new topic on the #Help forum as we want to hear about it!
PlayStation Network Status: http://support.us.playstation.com/app/answers/detail/a_id/237
Xbox Live Status: http://support.xbox.com/en-US/xbox-live-status