11:55:25 AM CONSOLE: [SEVERE] java.lang.ClassCastException: net.minecraft.network.NetLoginHandler cannot be cast to net.minecraft.network.NetServerHandler
11:55:25 AM CONSOLE: [SEVERE] at mca.core.forge.ConnectionHandler.connectionClosed(ConnectionHandler.java:70)
11:55:25 AM CONSOLE: [SEVERE] at cpw.mods.fml.common.network.NetworkRegistry.connectionClosed(NetworkRegistry.java:230)
11:55:25 AM CONSOLE: [SEVERE] at cpw.mods.fml.common.network.FMLNetworkHandler.onConnectionClosed(FMLNetworkHandler.java:330)
11:55:25 AM CONSOLE: [SEVERE] at net.minecraft.network.TcpConnection.func_74428_b(TcpConnection.java:485)
11:55:25 AM CONSOLE: [SEVERE] at net.minecraft.network.NetLoginHandler.func_72532_c(NetLoginHandler.java:91)
11:55:25 AM CONSOLE: [SEVERE] at net.minecraft.server.ServerListenThread.func_71766_a(ServerListenThread.java:57)
11:55:25 AM CONSOLE: [SEVERE] at net.minecraft.server.dedicated.DedicatedServerListenThread.func_71747_b(DedicatedServerListenThread.java:36)
11:55:25 AM CONSOLE: [SEVERE] at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:917)
11:55:25 AM CONSOLE: [SEVERE] at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:331)
11:55:25 AM CONSOLE: [SEVERE] at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:784)
11:55:25 AM CONSOLE: [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:666)
11:55:25 AM CONSOLE: [SEVERE] at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)