I've been struggling with these errors for a while now, I'd like to know exactly what do these errors mean. I'd really appreciate it if you could bring some clarification in it. Error #1 Code: 2012-02-24 14:57:20 [INFO] Failed to get local InetAddress for VMID. This is unlikely to matter. At all. We'll add some extra randomness java.net.UnknownHostException: mineos: mineos at java.net.InetAddress.getLocalHost(Unknown Source) at com.mchange.v2.c3p0.impl.C3P0ImplUtils.generateVmId(C3P0ImplUtils.java:120) at com.mchange.v2.c3p0.impl.C3P0ImplUtils.<clinit>(C3P0ImplUtils.java:98) at com.mchange.v2.c3p0.impl.PoolBackedDataSourceBase.<init>(PoolBackedDataSourceBase.java:227) at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.<init>(AbstractPoolBackedDataSource.java:62) at com.mchange.v2.c3p0.ComboPooledDataSource.<init>(ComboPooledDataSource.java:109) at com.mchange.v2.c3p0.ComboPooledDataSource.<init>(ComboPooledDataSource.java:105) at com.earth2me.essentials.protect.data.ProtectedBlockJDBC.<init>(ProtectedBlockJDBC.java:44) at com.earth2me.essentials.protect.data.ProtectedBlockJDBC.<init>(ProtectedBlockJDBC.java:39) at com.earth2me.essentials.protect.data.ProtectedBlockSQLite.<init>(ProtectedBlockSQLite.java:13) at com.earth2me.essentials.protect.EssentialsConnect$ProtectReloader.reloadConfig(EssentialsConnect.java:108) at com.earth2me.essentials.protect.EssentialsConnect.<init>(EssentialsConnect.java:33) at com.earth2me.essentials.protect.EssentialsProtect.onEnable(EssentialsProtect.java:51) at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:231) at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:1057) at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:379) at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftServer.java:191) at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:174) at net.minecraft.server.MinecraftServer.t(MinecraftServer.java:357) at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:344) at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:175) at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:408) at net.minecraft.server.ThreadServerApplication.run(SourceFile:465) Caused by: java.net.UnknownHostException: mineos at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method) at java.net.InetAddress$1.lookupAllHostAddr(Unknown Source) at java.net.InetAddress.getAddressesFromNameService(Unknown Source) ... 23 more Error #2 Code: 2012-02-19 14:00:22 [INFO] Saving chunks 2012-02-19 14:00:22 [SEVERE] net.minecraft.server.WorldConlictException: Failed to check session lock, aborting 2012-02-19 14:00:22 [SEVERE] at net.minecraft.server.WorldNBTStorage.checkSession(WorldNBTStorage.java:74) 2012-02-19 14:00:22 [SEVERE] at net.minecraft.server.World.l(World.java:2655) 2012-02-19 14:00:22 [SEVERE] at net.minecraft.server.World.y(World.java:278) 2012-02-19 14:00:22 [SEVERE] at net.minecraft.server.World.save(World.java:268) 2012-02-19 14:00:22 [SEVERE] at net.minecraft.server.MinecraftServer.saveChunks(MinecraftServer.java:367) 2012-02-19 14:00:22 [SEVERE] at net.minecraft.server.MinecraftServer.stop(MinecraftServer.java:397) 2012-02-19 14:00:22 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:465) 2012-02-19 14:00:22 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:465) Error #3 Code: 2012-02-12 18:25:31 [SEVERE] java.lang.NullPointerException 2012-02-12 18:25:35 [SEVERE] at java.util.Hashtable.get(Unknown Source) 2012-02-12 18:25:35 [SEVERE] at performancetweaks.bin.org.jbls.mrchasez.ChunkPersistance.run(ChunkPersistance.java:147) 2012-02-12 18:25:35 [SEVERE] at java.lang.Thread.run(Unknown Source) 2012-02-12 18:28:26 [INFO] Connection reset 2012-02-12 18:30:26 [SEVERE] null java.io.IOException: Input/output error at java.io.FileInputStream.readBytes(Native Method) at java.io.FileInputStream.read(Unknown Source) at java.io.BufferedInputStream.fill(Unknown Source) at java.io.BufferedInputStream.read(Unknown Source) at jline.Terminal.readCharacter(Terminal.java:99) at jline.UnixTerminal.readVirtualKey(UnixTerminal.java:128) at jline.ConsoleReader.readVirtualKey(ConsoleReader.java:1453) at jline.ConsoleReader.readBinding(ConsoleReader.java:654) at jline.ConsoleReader.readLine(ConsoleReader.java:494) at net.minecraft.server.ThreadCommandReader.run(ThreadCommandReader.java:31)
well the first one is that you are trying to do a dns name resolution of mineos and that fails... the rest... looks like a totally broken install to me.. oh yeah and probably a problem with performance tweaks. are you by any chance running cb++ ?