ok so my minecraft server keeps crashing idk y and idk what to do it has started when i downloaded java and upgraded to OS X 10.9 developers version idk what it is the upgrade or java because when ever i open my start.command something else opens with it too it was named something weird now after i upgraded to 10.9 and downloaded java the thing that opens with my start.command is called java and when ever the server crashes when i right click on it it says not responding here is the crash report ---- Minecraft Crash Report ---- // Quite honestly, I wouldn't worry myself about that. Time: 6/29/13 6:48 PM Description: Exception in server tick loop java.lang.NullPointerException at net.minecraft.server.v1_5_R3.DedicatedServer.an(DedicatedServer.java:258) at net.minecraft.server.v1_5_R3.DedicatedServer.a(DedicatedServer.java:204) at net.minecraft.server.v1_5_R3.MinecraftServer.run(MinecraftServer.java:417) at net.minecraft.server.v1_5_R3.ThreadServerApplication.run(SourceFile:573) A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- System Details -- Details: Minecraft Version: 1.5.2 Operating System: Mac OS X (x86_64) version 10.9 Java Version: 1.6.0_51, Apple Inc. Java VM Version: Java HotSpotâ„¢ 64-Bit Server VM (mixed mode), Apple Inc. Memory: 2106414784 bytes (2008 MB) / 2138767360 bytes (2039 MB) up to 2138767360 bytes (2039 MB) JVM Flags: 2 total; -Xmx2G -Xms2G AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used Suspicious classes: [net.minecraft.server.v1_5_R3.ICommandListener, IMojangStatistics, IDataManager, ...], [org.bukkit.World, BlockChangeDelegate, Server], [org.bukkit.block.BlockState], [org.bukkit.command.CommandSender, RemoteConsoleCommandSender], [org.bukkit.configuration.serialization.ConfigurationSerializable], [org.bukkit.craftbukkit.Main], [org.bukkit.craftbukkit.libs.jline.TerminalFactory, Terminal, Flavor, ...], [org.bukkit.craftbukkit.libs.jline.console.ConsoleReader, CursorBuffer, ConsoleKeys, ...], [org.bukkit.craftbukkit.libs.jline.console.completer.CompletionHandler, CandidateListCompletionHandler], [org.bukkit.craftbukkit.libs.jline.console.history.History, MemoryHistory], [org.bukkit.craftbukkit.libs.jline.internal.InputStreamReader, Configuration, Log, ...], [org.bukkit.craftbukkit.libs.joptsimple.OptionException, OptionParser, OptionSpec, ...], [org.bukkit.craftbukkit.libs.joptsimple.internal.AbbreviationMap, ReflectionException, Reflection, ...], [org.bukkit.craftbukkit.libs.joptsimple.util.KeyValuePair], [org.bukkit.craftbukkit.v1_5_R3.LoggerOutputStream, CraftServer], [org.bukkit.craftbukkit.v1_5_R3.inventory.CraftItemStack, CraftInventory, CraftInventoryDoubleChest, ...], [org.bukkit.craftbukkit.v1_5_R3.potion.CraftPotionEffectType], [org.bukkit.craftbukkit.v1_5_R3.util.Waitable, ServerShutdownThread, TerminalConsoleHandler, ...], [org.bukkit.entity.Entity], [org.bukkit.event.Event, Cancellable, HandlerList, ...], [org.bukkit.event.block.BlockEvent, BlockFadeEvent, BlockGrowEvent, ...], [org.bukkit.event.entity.EntityEvent, EntityInteractEvent, EntityDamageEvent, ...], [org.bukkit.event.hanging.HangingEvent, HangingPlaceEvent], [org.bukkit.event.inventory.InventoryMoveItemEvent], [org.bukkit.event.painting.PaintingEvent, PaintingPlaceEvent], [org.bukkit.event.player.PlayerEvent, PlayerInteractEvent, PlayerFishEvent], [org.bukkit.event.server.ServerEvent, MapInitializeEvent, ServerCommandEvent], [org.bukkit.event.world.WorldEvent, WorldSaveEvent, WorldInitEvent, ...], [org.bukkit.inventory.ItemStack, Inventory, DoubleChestInventory, ...], [org.bukkit.map.MapView], [org.bukkit.metadata.Metadatable], [org.bukkit.permissions.ServerOperator, Permissible], [org.bukkit.plugin.messaging.PluginMessageRecipient], [org.bukkit.potion.PotionEffectType, PotionEffectTypeWrapper], [org.fusesource.jansi.AnsiOutputStream, Ansi, NoAnsi, ...] IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0 CraftBukkit Information: Running: Failed to handle CraftCrashReport: java.lang.NullPointerException at org.bukkit.Bukkit.getName(Bukkit.java:72) at org.bukkit.craftbukkit.v1_5_R3.CraftCrashReport.call(CraftCrashReport.java:20) at net.minecraft.server.v1_5_R3.CrashReportSystemDetails.a(SourceFile:74) at net.minecraft.server.v1_5_R3.CrashReport.h(CrashReport.java:41) at net.minecraft.server.v1_5_R3.CrashReport.<init>(CrashReport.java:28) at net.minecraft.server.v1_5_R3.MinecraftServer.run(MinecraftServer.java:427) at net.minecraft.server.v1_5_R3.ThreadServerApplication.run(SourceFile:573) Profiler Position: N/A (disabled) Is Modded: Definitely; Server brand changed to 'craftbukkit' Type: Dedicated Server (map_server.txt) thanks in advanced and plz reply