server crash log

12.12 18:46:45 [Server] SEVERE Reached end of stream for /108.34.214.13
12.12 18:46:45 [Multicraft] Skipped 18 lines due to rate limit (60/s)
12.12 18:46:36 [Server] INFO at net.minecraft.network.NetworkListenThread.func_71747_b(NetworkListenThread.java:54)
12.12 18:46:36 [Server] INFO at net.minecraft.network.NetServerHandler.func_72570_d(NetServerHandler.java:141)
12.12 18:46:36 [Server] INFO at net.minecraft.network.TcpConnection.func_74428_b(TcpConnection.java:462)
12.12 18:46:36 [Server] INFO at net.minecraft.network.packet.Packet131MapData.func_73279_a(SourceFile:41)
12.12 18:46:36 [Server] INFO at net.minecraft.network.NetServerHandler.func_72494_a(NetServerHandler.java:1312)
12.12 18:46:36 [Server] INFO at cpw.mods.fml.common.network.FMLNetworkHandler.handlePacket131Packet(FMLNetworkHandler.java:430)
12.12 18:46:36 [Server] INFO at cpw.mods.fml.common.network.NetworkRegistry.handleTinyPacket(NetworkRegistry.java:354)
12.12 18:46:36 [Server] INFO at codechicken.lib.packet.PacketCustom$CustomTinyPacketHandler.handle(PacketCustom.java:233)
12.12 18:46:36 [Server] INFO at codechicken.lib.packet.PacketCustom$ServerTinyPacketHandler.handle(PacketCustom.java:201)
12.12 18:46:36 [Server] INFO at codechicken.multipart.minecraft.McMultipartSPH.handlePacket(McMultipartSPH.java:19)
12.12 18:46:36 [Server] INFO at codechicken.multipart.minecraft.EventHandler.place(EventHandler.java:41)
12.12 18:46:36 [Server] INFO at codechicken.lib.raytracer.RayTracer.reTrace(RayTracer.java:212)
12.12 18:46:36 [Server] INFO at codechicken.lib.raytracer.RayTracer.reTrace(RayTracer.java:220)
12.12 18:46:36 [Server] INFO at net.minecraft.world.World.func_72831_a(World.java:1431)
12.12 18:46:36 [Server] INFO at codechicken.multipart.BlockMultipart.func_71878_a(BlockMultipart.scala:79)
12.12 18:46:36 [Server] INFO at codechicken.multipart.BlockMultipart.collisionRayTrace(BlockMultipart.scala:104)
12.12 18:46:36 [Server] INFO at codechicken.multipart.TileMultipart.collisionRayTrace(TileMultipart.scala:451)
12.12 18:46:36 [Server] INFO at codechicken.multipart.TileMultipart.rayTraceAll(TileMultipart.scala:436)
12.12 18:46:36 [Server] INFO at scala.collection.AbstractSeq.view(Seq.scala:40)
12.12 18:46:36 [Server] INFO at scala.collection.SeqLike$class.view(SeqLike.scala:635)
12.12 18:46:36 [Server] INFO java.lang.NoClassDefFoundError: scala/collection/SeqLike$$anon$2
12.12 18:46:36 [Server] SEVERE Encountered an unexpected exception NoClassDefFoundError
12.12 18:46:36 [Server] INFO ... 28 more
12.12 18:46:36 [Server] INFO at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:178)
12.12 18:46:36 [Server] INFO at java.security.SecureClassLoader.defineClass(Unknown Source)
12.12 18:46:36 [Server] INFO at java.lang.ClassLoader.defineClass(Unknown Source)
12.12 18:46:36 [Server] INFO at java.lang.ClassLoader.defineClass1(Native Method)
12.12 18:46:36 [Server] INFO Caused by: java.lang.OutOfMemoryError: PermGen space
12.12 18:46:36 [Server] INFO ... 26 more
12.12 18:46:36 [Server] INFO at java.lang.ClassLoader.loadClass(Unknown Source)
12.12 18:46:36 [Server] INFO at java.lang.ClassLoader.loadClass(Unknown Source)
12.12 18:46:36 [Server] INFO at