missing microblocks please help ASAP

[XenGames]

Hello I am Xen. I am having a little bit of trouble joining my server that I have created for me and my friends to play on. Whenever I join it displays the following message;

Other information:
Everyone else can join but me
I have attempted to update my feed the beast (still does not work)
I have tried deleted my direwolf20 folder (the modpack I am using)

 

[Darkmethos]

Seems like a simple question, but sometimes we tend to overlook the simple stuff. Are you and your friends running the same version of the Direwolf20 pack? Also are you running the same version of the Direwolf20 pack that the server is running?