Today at 16:00 CEST we are having a hotfix version on the servers we updated to version 8 yesterday to fix the error messages that have shown up. From tomorrow on, the servers receiving the update will get directly this version.
Also, the Graveyard server has been disabled due to the different operating system versions on the servers causing issues. The effect of this is accounts in player's lobbies which are on the Graveyard server will temporarily disappear and it will not be possible to merge the accounts from the Graveyard to live universes. The Graveyard server will be enabled again after all the servers have been updated to version 8. We will announce when it is planned to take the Graveyard server live again.
Your OGame Team