I run my own server with a friend and as of the update, he is completely unable to join the game. We have done repair, deleted and redownloaded the mod, uninstalled and reinstalled the game. We have done all the troubleshooting. We are still getting the following error:

WARNING (0x00040093)
Data verification error:
Server has a more recent version.
Please update. If that fails:
Please verify the integrity of your game files and/or reinstall the game.
(Community Online Tools (PBO: PBO: steamapps\common\DayZ\!Workshop\@Community-Online-Tools\addons\Scripts.pbo (ClientVersion: 24092617 | ServerVersion: 24091719) ))

At about my wits end with it and short of literally restarting my server from scratch, we've done all that we've found to do. Help is appreciated.