Question Discconnect from server when connecting (for one player only)

Hello!
Firstly, i need to sorry for my very bad english.
Secondly, sorry if this forum isn't right place for my question.

I have server KCauldron-1.7.10-1492.152 with plugins and mods and custom launcher. Everything works fine, and 5 players can connect and play normally. But one man keeps being disconnected right after logging in to the server
Earlier he can play on server after 3-5 bad connections (after fail he cleans up registry with CCCleaner or reboot pc, or something else). Now he always gets disconnected from server.
I try to help him, and do many things (reinstall Ethernet drivers, bios update.. finally we reinstall Windows (7) and clean install drivers and java). But anyway it doesn't work.

I think problem on him(its?) side, 'cause another 5 people can normally play.

Server Log (open) Server Log (close)

Code:

[21:43:59] [User Authenticator #11/INFO]: UUID of player Grinemus is 90321b40-2f4a-3d4a-a868-e20b8bb587c0
[21:44:18] [Server thread/INFO]: Grinemus lost connection: Internal Exception: java.io.IOException: Соединение разорвано другой стороной
[21:45:03] [Server thread/INFO]: [Unse: Given [Christmas Tree Small] * 64 to Unse]
[21:47:33] [User Authenticator #12/INFO]: UUID of player Grinemus is 90321b40-2f4a-3d4a-a868-e20b8bb587c0
[21:47:52] [Server thread/INFO]: Grinemus lost connection: Internal Exception: java.io.IOException: Соединение разорвано другой стороной
[21:48:57] [User Authenticator #13/INFO]: UUID of player Grinemus is 90321b40-2f4a-3d4a-a868-e20b8bb587c0
[21:49:16] [Server thread/INFO]: Grinemus lost connection: Internal Exception: java.io.IOException: Соединение разорвано другой стороной

http://pastebin.com/LfgWF3Lw

Client log (open) Client log (close)

Code:

[03:46:19] [Client thread/INFO]: Connecting to redtube.com:), 25565
[03:46:21] [Netty Client IO #1/INFO]: Baking listener list for PostLoginListener with 0 listeners
[03:46:21] [Netty Client IO #1/INFO]: Server protocol version 2
[03:46:23] [Netty Client IO #1/INFO]: Unexpected packet during modded negotiation - assuming vanilla or keepalives : net.minecraft.network.play.server.S00PacketKeepAlive
[03:46:25] [Netty Client IO #1/INFO]: Unexpected packet during modded negotiation - assuming vanilla or keepalives : net.minecraft.network.play.server.S00PacketKeepAlive
[03:46:27] [Netty Client IO #1/INFO]: Unexpected packet during modded negotiation - assuming vanilla or keepalives : net.minecraft.network.play.server.S00PacketKeepAlive
[03:46:29] [Netty Client IO #1/INFO]: Unexpected packet during modded negotiation - assuming vanilla or keepalives : net.minecraft.network.play.server.S00PacketKeepAlive
[03:46:31] [Netty Client IO #1/INFO]: Unexpected packet during modded negotiation - assuming vanilla or keepalives : net.minecraft.network.play.server.S00PacketKeepAlive
[03:46:33] [Netty Client IO #1/INFO]: Unexpected packet during modded negotiation - assuming vanilla or keepalives : net.minecraft.network.play.server.S00PacketKeepAlive
[03:46:35] [Netty Client IO #1/INFO]: Unexpected packet during modded negotiation - assuming vanilla or keepalives : net.minecraft.network.play.server.S00PacketKeepAlive
[03:46:37] [Netty Client IO #1/INFO]: Unexpected packet during modded negotiation - assuming vanilla or keepalives : net.minecraft.network.play.server.S00PacketKeepAlive
[03:46:39] [Netty Client IO #1/INFO]: Unexpected packet during modded negotiation - assuming vanilla or keepalives : net.minecraft.network.play.server.S00PacketKeepAlive
[03:46:40] [Netty Client IO #1/ERROR]: NetworkDispatcher exception
java.io.IOException: Удаленный хост принудительно разорвал существующее подключение
    at sun.nio.ch.SocketDispatcher.read0(Native Method) ~[?:1.8.0_65]
    at sun.nio.ch.SocketDispatcher.read(Unknown Source) ~[?:1.8.0_65]
    at sun.nio.ch.IOUtil.readIntoNativeBuffer(Unknown Source) ~[?:1.8.0_65]
    at sun.nio.ch.IOUtil.read(Unknown Source) ~[?:1.8.0_65]
    at sun.nio.ch.SocketChannelImpl.read(Unknown Source) ~[?:1.8.0_65]
    at io.netty.buffer.UnpooledUnsafeDirectByteBuf.setBytes(UnpooledUnsafeDirectByteBuf.java:436) ~[UnpooledUnsafeDirectByteBuf.class:?]
    at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:870) ~[AbstractByteBuf.class:?]
    at io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:208) ~[NioSocketChannel.class:?]
    at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:87) [AbstractNioByteChannel$NioByteUnsafe.class:?]
    at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:480) [NioEventLoop.class:?]
    at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:447) [NioEventLoop.class:?]
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:341) [NioEventLoop.class:?]
    at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101) [SingleThreadEventExecutor$2.class:?]
    at java.lang.Thread.run(Unknown Source) [?:1.8.0_65]
[03:46:40] [Netty Client IO #1/INFO]: Disconnect from server: Unregistering RFTools dimensions
[03:46:40] [Netty Client IO #1/ERROR]: Exception caught during firing event cpw.mods.fml.common.network.FMLNetworkEvent$ClientDisconnectionFromServerEvent@624548bf:
java.lang.NullPointerException
    at mcjty.rftools.dimension.RfToolsDimensionManager.unregisterDimensions(RfToolsDimensionManager.java:96) ~[RfToolsDimensionManager.class:?]
    at mcjty.rftools.ClientDisconnectEvent.onDisconnectedFromServerEvent(ClientDisconnectEvent.java:14) ~[ClientDisconnectEvent.class:?]
    at cpw.mods.fml.common.eventhandler.ASMEventHandler_1092_ClientDisconnectEvent_onDisconnectedFromServerEvent_ClientDisconnectionFromServerEvent.invoke(.dynamic) ~[?:?]
    at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54) ~[ASMEventHandler.class:?]
    at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:138) [EventBus.class:?]
    at cpw.mods.fml.common.network.handshake.NetworkDispatcher.close(NetworkDispatcher.java:405) [NetworkDispatcher.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.invokeClose(DefaultChannelHandlerContext.java:560) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.close(DefaultChannelHandlerContext.java:545) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.close(DefaultChannelHandlerContext.java:423) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.DefaultChannelPipeline.close(DefaultChannelPipeline.java:826) [DefaultChannelPipeline.class:?]
    at io.netty.channel.AbstractChannel.close(AbstractChannel.java:177) [AbstractChannel.class:?]
    at net.minecraft.network.NetworkManager.func_150718_a(NetworkManager.java:230) [ej.class:?]
    at net.minecraft.network.NetworkManager.exceptionCaught(NetworkManager.java:104) [ej.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.invokeExceptionCaught(DefaultChannelHandlerContext.java:275) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.fireExceptionCaught(DefaultChannelHandlerContext.java:253) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.ChannelInboundHandlerAdapter.exceptionCaught(ChannelInboundHandlerAdapter.java:131) [ChannelInboundHandlerAdapter.class:?]
    at cpw.mods.fml.common.network.handshake.NetworkDispatcher.exceptionCaught(NetworkDispatcher.java:487) [NetworkDispatcher.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.invokeExceptionCaught(DefaultChannelHandlerContext.java:275) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.fireExceptionCaught(DefaultChannelHandlerContext.java:253) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.ChannelHandlerAdapter.exceptionCaught(ChannelHandlerAdapter.java:61) [ChannelHandlerAdapter.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.invokeExceptionCaught(DefaultChannelHandlerContext.java:275) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.fireExceptionCaught(DefaultChannelHandlerContext.java:253) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.ChannelHandlerAdapter.exceptionCaught(ChannelHandlerAdapter.java:61) [ChannelHandlerAdapter.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.invokeExceptionCaught(DefaultChannelHandlerContext.java:275) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.fireExceptionCaught(DefaultChannelHandlerContext.java:253) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.ChannelHandlerAdapter.exceptionCaught(ChannelHandlerAdapter.java:61) [ChannelHandlerAdapter.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.invokeExceptionCaught(DefaultChannelHandlerContext.java:275) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.fireExceptionCaught(DefaultChannelHandlerContext.java:253) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.ChannelInboundHandlerAdapter.exceptionCaught(ChannelInboundHandlerAdapter.java:131) [ChannelInboundHandlerAdapter.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.invokeExceptionCaught(DefaultChannelHandlerContext.java:275) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.fireExceptionCaught(DefaultChannelHandlerContext.java:253) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.ChannelInboundHandlerAdapter.exceptionCaught(ChannelInboundHandlerAdapter.java:131) [ChannelInboundHandlerAdapter.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.invokeExceptionCaught(DefaultChannelHandlerContext.java:275) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.fireExceptionCaught(DefaultChannelHandlerContext.java:253) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.ChannelInboundHandlerAdapter.exceptionCaught(ChannelInboundHandlerAdapter.java:131) [ChannelInboundHandlerAdapter.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.invokeExceptionCaught(DefaultChannelHandlerContext.java:275) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.fireExceptionCaught(DefaultChannelHandlerContext.java:253) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.ChannelInboundHandlerAdapter.exceptionCaught(ChannelInboundHandlerAdapter.java:131) [ChannelInboundHandlerAdapter.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.invokeExceptionCaught(DefaultChannelHandlerContext.java:275) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.DefaultChannelHandlerContext.fireExceptionCaught(DefaultChannelHandlerContext.java:253) [DefaultChannelHandlerContext.class:?]
    at io.netty.channel.DefaultChannelPipeline.fireExceptionCaught(DefaultChannelPipeline.java:773) [DefaultChannelPipeline.class:?]
    at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:125) [AbstractNioByteChannel$NioByteUnsafe.class:?]
    at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:480) [NioEventLoop.class:?]
    at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:447) [NioEventLoop.class:?]
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:341) [NioEventLoop.class:?]
    at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101) [SingleThreadEventExecutor$2.class:?]
    at java.lang.Thread.run(Unknown Source) [?:1.8.0_65]
[03:46:40] [Netty Client IO #1/ERROR]: Index: 10 Listeners:
[03:46:40] [Netty Client IO #1/ERROR]: 0: NORMAL
[03:46:40] [Netty Client IO #1/ERROR]: 1: ASM: thaumcraft.common.lib.network.EventHandlerNetwork@5191d138 clientLogsOut(Lcpw/mods/fml/common/network/FMLNetworkEvent$ClientDisconnectionFromServerEvent;)V
[03:46:40] [Netty Client IO #1/ERROR]: 2: ASM: crazypants.enderio.machine.hypercube.ConnectionHandler@4efa0b54 onDisconnectedFromServer(Lcpw/mods/fml/common/network/FMLNetworkEvent$ClientDisconnectionFromServerEvent;)V
[03:46:40] [Netty Client IO #1/ERROR]: 3: ASM: crazypants.enderio.machine.transceiver.ConnectionHandler@73e97dea onDisconnectedFromServer(Lcpw/mods/fml/common/network/FMLNetworkEvent$ClientDisconnectionFromServerEvent;)V
[03:46:40] [Netty Client IO #1/ERROR]: 4: ASM: factorization.fzds.HammerClientProxy@2dd18f4d onClientLogout(Lcpw/mods/fml/common/network/FMLNetworkEvent$ClientDisconnectionFromServerEvent;)V
[03:46:40] [Netty Client IO #1/ERROR]: 5: ASM: com.xcompwiz.mystcraft.network.MystcraftConnectionHandler@679456a5 connectionClosed(Lcpw/mods/fml/common/network/FMLNetworkEvent$ClientDisconnectionFromServerEvent;)V
[03:46:40] [Netty Client IO #1/ERROR]: 6: ASM: openperipheral.addons.glasses.TerminalManagerClient$FmlBusListener@4b4e0f96 onDisconnect(Lcpw/mods/fml/common/network/FMLNetworkEvent$ClientDisconnectionFromServerEvent;)V
[03:46:40] [Netty Client IO #1/ERROR]: 7: ASM: dan200.computercraft.shared.proxy.ComputerCraftProxyCommon$ForgeHandlers@49a25f36 onConnectionClosed(Lcpw/mods/fml/common/network/FMLNetworkEvent$ClientDisconnectionFromServerEvent;)V
[03:46:40] [Netty Client IO #1/ERROR]: 8: ASM: micdoodle8.mods.galacticraft.core.network.ConnectionEvents@51a0fcd3 onConnectionClosed(Lcpw/mods/fml/common/network/FMLNetworkEvent$ClientDisconnectionFromServerEvent;)V
[03:46:40] [Netty Client IO #1/ERROR]: 9: ASM: net.gliby.voicechat.client.networking.game.ClientDisconnectHandler@3f8ffe91 onClientDisconnected(Lcpw/mods/fml/common/network/FMLNetworkEvent$ClientDisconnectionFromServerEvent;)V
[03:46:40] [Netty Client IO #1/ERROR]: 10: ASM: mcjty.rftools.ClientDisconnectEvent@24b866ef onDisconnectedFromServerEvent(Lcpw/mods/fml/common/network/FMLNetworkEvent$ClientDisconnectionFromServerEvent;)V
[03:46:40] [Netty Client IO #1/ERROR]: 11: ASM: ic2.core.network.RpcHandler@1036504a onDisconnect(Lcpw/mods/fml/common/network/FMLNetworkEvent$ClientDisconnectionFromServerEvent;)V
[03:46:40] [Netty Client IO #1/ERROR]: 12: ASM: openmods.network.IdSyncManager@742f590 onDisconnect(Lcpw/mods/fml/common/network/FMLNetworkEvent$ClientDisconnectionFromServerEvent;)V
[03:46:48] [Client thread/INFO]: Enabling Main Menu Mob render ticker

http://pastebin.com/tJq9usw3

Full client log: http://pastebin.com/z2k4pZbL


Please, help me. I don't know what to do, i run out of ideas.
I can tell any info of my server, if need. (except passwords )