I get this error java.lang.ExceptionInInitializerError:null when installing the steam and rails mod of version 1.6.11 of create which some friends have and it works ...

I have tried both V5.1.0 and the latest DEV build v5.1.1-SNAPSHOT-669 This is running on a hybrid forge/bukkit server (magma) and Protocollib was working a couple of ...