Error 5006 (trying to connect to Aether Lobby)

[Raist]

Hard to say for certain without seeing a hex code that typically gets logged with 5006, but basically it is because a resource was not found or otherwise inaccessible. Could be the file was still locked after patching, or a flaky transfer from the server resulted in a retransmit that delayed delivery longer then expected.

If you haven't rebooted since the last patch you could give that a shot. If you frequently suspend/hibernate your system (rarely actually shutting it completely off), it would be a good idea to get in the habit of doing a full power down periodically. Some updates won't actually complete until the system is restarted. The file system itself can also use a reboot as an opportunity to do some light maintenance as well which can help prevent/resolve some conflicts that may rear their ugly heads after a while.