NetworkWrapper.scala:19: no type parameters for method registerMessage: (x$1: Class[_ <: cpw.mods.fml.common.network.simpleimpl.IMessageHandler[REQ,REPLY]], x$2: Class[REQ], x$3: Int, x$4: cpw.mods.fml.relauncher.Side)Unit exist so that it can be applied to arguments (Class[_$1(in value $anonfun)], Class[(some other)_$1(in value $anonfun)], Int, cpw.mods.fml.relauncher.Side)
 --- because ---
argument expression's type is not compatible with formal parameter type;
 found   : Class[_$1] where type _$1 <: cpw.mods.fml.common.network.simpleimpl.IMessageHandler[_ <: cpw.mods.fml.common.network.simpleimpl.IMessage, _ <: cpw.mods.fml.common.network.simpleimpl.IMessage]
 required: Class[_ <: cpw.mods.fml.common.network.simpleimpl.IMessageHandler[?REQ,?REPLY]]
      CHANNEL.registerMessage(messageType.handlerClass,
              ^
NetworkWrapper.scala:19: type mismatch;
 found   : Class[_$1] where type _$1 <: cpw.mods.fml.common.network.simpleimpl.IMessageHandler[_ <: cpw.mods.fml.common.network.simpleimpl.IMessage, _ <: cpw.mods.fml.common.network.simpleimpl.IMessage]
 required: Class[_ <: cpw.mods.fml.common.network.simpleimpl.IMessageHandler[REQ,REPLY]]
      CHANNEL.registerMessage(messageType.handlerClass,
                                          ^
NetworkWrapper.scala:20: type mismatch;
 found   : Class[_$1] where type _$1 <: cpw.mods.fml.common.network.simpleimpl.IMessage
 required: Class[REQ]
        messageType.messageClass, currentDiscriminator, messageType.side)
                    ^