Multiplayer help

[JustCre8te]

I was trying to join the server i play on alot and this came up

http://gyazo.com/38797b0c0002eaf87fe8d04b61d5abeb The server is running Mindrack FTB and im sure ive tried updating everything and nothing works

 

[Nibrodooh]

the server is not up to date, use an earlier version of the modpack