Some mod in my custom modpack won't allow you to open your inventory can anyone help me? No idea what is causing this

[beastwar52400]

Some mod, in my modpack, that I don't know is interfering with the ability to open your inventory in game. (from pressing the 'e' key)

 

Modpack link:    http://www.technicpack.net/modpack/words-with-friends.878624