Hey guys so I tried to update my server to the new Hotfix. I did everything the UPDATE.txt said to do. This error keeps popping up when I try to join.

Recurrent Complex: Failed mod's custom NetworkCheckHandler FMLMod:reccomplex{1.4.8.2}

Also, whenever I tried to do the installer to update forge it just immediately closes out.

Did you update your client too?

Yes I did, I think it's my server that won't update.

Either your server or client is missing Recurrant Complex. But without more information I cannot really help. Seems we have a template for a reason after all.