The error just happened to me. Played early in the morning, logged out as normal and turned off the system. No power surges, no power outages. My sister tried to log in at around 12:20EST and there it was, the huge download of 22k megabytes and a download time of about 10 hours approximately. I am nervous, she is nervous and we do NOT want this to happen again. Is there anyone among you that might know how to prevent this from happening again before SE and the dev. team update and fix this?

Also, have any among you experienced any errors or troubles after re-downloading the huge 22-gig package? Any replies would be appreciated.

SE and dev. team, this expansion has been an utter nightmare when it comes to system infrastructure. Errors with the server that manages data movement for instances and the duty finder. Errors with reliable, constant connectivity. Previously before early access, errors with data corruption. And now an error or bug with the data of the game itself that forces a re-download of everything because reasons. Please look into this, as the system seems weak and flawed.