Server Crashes and will not start

Description: Exception in server tick loop

java.lang.NoSuchMethodError: sonar.core.network.sync.SyncNBTAbstract.setObject(Lsonar/core/api/nbt/INBTSyncable;)V
at sonar.flux.connection.FluxNetworkCommon.(FluxNetworkCommon.java:45)
at sonar.flux.connection.BasicFluxNetwork.(BasicFluxNetwork.java:56)
at sonar.flux.network.NetworkData.func_76184_a(NetworkData.java:63)
at net.minecraft.world.storage.MapStorage.func_75742_a(SourceFile:52)
at sonar.flux.FluxEvents.onWorldLoad(FluxEvents.java:52)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_802_FluxEvents_onWorldLoad_Load.invoke(.dynamic)
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:179)
at net.minecraft.server.MinecraftServer.func_71247_a(MinecraftServer.java:309)
at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:270)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:484)
at java.lang.Thread.run(Unknown Source)

Updating to latest Flux Networks (3.0.4) Resolved the Issue