Server stürzt immer wieder ab

[18:13:03] [Server thread/INFO]: Starting minecraft server version 1.7.2
[18:13:03] [Server thread/INFO]: Loading properties
[18:13:04] [Server thread/INFO]: Default game type: SURVIVAL
[18:13:04] [Server thread/INFO]: Generating keypair
[18:13:07] [Server thread/INFO]: Starting Minecraft server on *:46952
[18:13:10] [Server thread/INFO]: This server is running CraftBukkit version git-Bukkit-1.6.4-R2.0-49-g5a2dda2-b2957jnks (MC: 1.7.2) (Implementing API version 1.7.2-R0.1-SNAPSHOT)
[18:13:13] [Thread-7/WARN]: Could not get information about this CraftBukkit version; perhaps you are running a custom one?: IOException
[18:13:13] [Thread-7/WARN]: Could not get latest artifact information: IOException
[18:13:19] [Server thread/INFO]: [PermissionsEx] sql backend registered!
[18:13:19] [Server thread/INFO]: [PermissionsEx] file backend registered!
[18:13:21] [Server thread/INFO]: [MultiWorld] Loading MultiWorld v5.2.1
[18:13:21] [Server thread/INFO]: [Chairs] Loading Chairs v3.3.beta
[18:13:21] [Server thread/INFO]: [KitBattle] Loading KitBattle v1.4
[18:13:21] [Server thread/INFO]: [WorldEdit] Loading WorldEdit v5.6
[18:13:21] [Server thread/INFO]: [ColoredSigns] Loading ColoredSigns v2.0
[18:13:21] [Server thread/INFO]: [ClickWarp] Loading ClickWarp v1.3.4
[18:13:21] [Server thread/INFO]: [WoodCutter] Loading WoodCutter v1.4.4
[18:13:21] [Server thread/INFO]: [PermissionsEx] Loading PermissionsEx v1.20.4
[18:13:21] [Server thread/INFO]: [PermissionsEx] Initializing file backend
[18:13:21] [Server thread/INFO]: Permissions file successfully reloaded
[18:13:21] [Server thread/INFO]: [MobArena] Loading MobArena v0.96.5
[18:13:21] [Server thread/INFO]: [WorldGuard] Loading WorldGuard v5.9
[18:13:21] [Server thread/INFO]: [Essentials] Loading Essentials v2.13.1
[18:13:21] [Server thread/INFO]: [Lift] Loading Lift v48
[18:13:21] [Server thread/INFO]: [EssentialsProtect] Loading EssentialsProtect v2.13.1
[18:13:21] [Server thread/INFO]: [EssentialsSpawn] Loading EssentialsSpawn v2.13.1
[18:13:21] [Server thread/INFO]: [EssentialsChat] Loading EssentialsChat v2.13.1
[18:13:21] [Server thread/INFO]: Preparing level "world"
[18:13:22] [Server thread/INFO]: Preparing start region for level 0 (Seed: -8577181241037832960)
[18:13:23] [Server thread/INFO]: Preparing spawn area: 0%
[18:13:24] [Server thread/INFO]: Preparing spawn area: 1%
[18:13:25] [Server thread/INFO]: Preparing spawn area: 17%
[18:13:27] [Server thread/INFO]: Preparing spawn area: 57%
[18:13:28] [Server thread/INFO]: Preparing spawn area: 96%
[18:13:28] [Server thread/INFO]: Preparing start region for level 1 (Seed: -8577181241037832960)
[18:13:29] [Server thread/INFO]: Preparing spawn area: 42%
[18:13:30] [Server thread/INFO]: Preparing spawn area: 83%
[18:13:31] [Server thread/INFO]: Preparing start region for level 2 (Seed: -8577181241037832960)
[18:13:32] [Server thread/INFO]: [MultiWorld] Enabling MultiWorld v5.2.1
[18:13:32] [Server thread/INFO]: Preparing start region for level 3 (Seed: -8324702419815106596)
[18:13:33] [Server thread/INFO]: Preparing spawn area for Games, 61%
[18:13:33] [Server thread/INFO]: [MultiWorld] v5.2.1 enabled.
[18:13:34] [Server thread/INFO]: [Chairs] Enabling Chairs v3.3.beta
[18:13:34] [Server thread/INFO]: [Chairs] Loaded ignore list. (Count = 0)
[18:13:34] [Server thread/INFO]: [Chairs] Allowed block: WOOD_STAIRS => 0.7
[18:13:34] [Server thread/INFO]: [Chairs] Allowed block: SPRUCE_WOOD_STAIRS => 0.7
[18:13:34] [Server thread/INFO]: [Chairs] Allowed block: JUNGLE_WOOD_STAIRS => 0.7
[18:13:34] [Server thread/INFO]: [Chairs] Allowed block: BIRCH_WOOD_STAIRS => 0.7
[18:13:34] [Server thread/INFO]: [Chairs] Allowed block: SANDSTONE_STAIRS => 0.7
[18:13:34] [Server thread/INFO]: [Chairs] Allowed block: COBBLESTONE_STAIRS => 0.7
[18:13:34] [Server thread/INFO]: [Chairs] Allowed block: BRICK_STAIRS => 0.7
[18:13:34] [Server thread/INFO]: [Chairs] Allowed block: SMOOTH_STAIRS => 0.7
[18:13:34] [Server thread/INFO]: [Chairs] Allowed block: NETHER_BRICK_STAIRS => 0.7
[18:13:34] [Server thread/INFO]: [Chairs] Allowed block: QUARTZ_STAIRS => 0.7
[18:13:34] [Server thread/INFO]: [Chairs] Allowed block: ACACIA_STAIRS => 0.7
[18:13:34] [Server thread/INFO]: [Chairs] Allowed block: DARK_OAK_STAIRS => 0.7
[18:13:34] [Server thread/INFO]: [KitBattle] Enabling KitBattle v1.4
[18:13:34] [Server thread/INFO]: [KitBattle] KitBattle Has Been Enabled!
[18:13:34] [Server thread/INFO]: [WorldEdit] Enabling WorldEdit v5.6
[18:13:34] [Server thread/INFO]: WEPIF: Using the Bukkit Permissions API.
[18:13:35] [Server thread/INFO]: [ColoredSigns] Enabling ColoredSigns v2.0
[18:13:35] [Server thread/INFO]: [ColoredSigns] ColoredSigns enabling.
[18:13:35] [Server thread/WARN]: [ColoredSigns] PermissionsEx support is disabled.
[18:13:35] [Server thread/INFO]: [ColoredSigns] Starting services.. loading file and library's.
[18:13:35] [Server thread/INFO]: [ClickWarp] Enabling ClickWarp v1.3.4
[18:13:35] [Server thread/INFO]: [ClickWarp] Metrics started!
[18:13:36] [Server thread/INFO]: [ClickWarp] Plugin v1.3.4 by comniemeer enabled.
[18:13:36] [Server thread/INFO]: [WoodCutter] Enabling WoodCutter v1.4.4
[18:13:36] [Server thread/INFO]: [PermissionsEx] Enabling PermissionsEx v1.20.4
[18:13:37] [Server thread/INFO]: WEPIF: PermissionsEx detected! Using PermissionsEx for permissions.
[18:13:37] [Server thread/INFO]: [MobArena] Enabling MobArena v0.96.5
[18:13:38] [Server thread/WARN]: [MobArena] Vault was not found. Economy rewards will not work!
[18:13:39] [Server thread/WARN]: [MobArena] Failed to parse item: Diamondblock
[18:13:40] [Server thread/INFO]: [MobArena] Loaded arena 'default'
[18:13:40] [Server thread/INFO]: [MobArena] Loaded arena 'Wald'
[18:13:40] [Server thread/INFO]: [MobArena] v0.96.5 enabled.
[18:13:40] [Server thread/INFO]: [WorldGuard] Enabling WorldGuard v5.9
[18:13:41] [Server thread/INFO]: [WorldGuard] (world) TNT ignition is PERMITTED.
[18:13:41] [Server thread/INFO]: [WorldGuard] (world) Lighters are PERMITTED.
[18:13:41] [Server thread/INFO]: [WorldGuard] (world) Lava fire is blocked.
[18:13:41] [Server thread/INFO]: [WorldGuard] (world) Fire spread is UNRESTRICTED.
[18:13:41] [Server thread/INFO]: [WorldGuard] Loaded configuration for world 'world'
[18:13:41] [Server thread/INFO]: [WorldGuard] (world_nether) TNT ignition is PERMITTED.
[18:13:41] [Server thread/INFO]: [WorldGuard] (world_nether) Lighters are PERMITTED.
[18:13:41] [Server thread/INFO]: [WorldGuard] (world_nether) Lava fire is blocked.
[18:13:41] [Server thread/INFO]: [WorldGuard] (world_nether) Fire spread is UNRESTRICTED.
[18:13:41] [Server thread/INFO]: [WorldGuard] Loaded configuration for world 'world_nether'
[18:13:41] [Server thread/INFO]: [WorldGuard] (world_the_end) TNT ignition is PERMITTED.
[18:13:41] [Server thread/INFO]: [WorldGuard] (world_the_end) Lighters are PERMITTED.
[18:13:41] [Server thread/INFO]: [WorldGuard] (world_the_end) Lava fire is blocked.
[18:13:41] [Server thread/INFO]: [WorldGuard] (world_the_end) Fire spread is UNRESTRICTED.
[18:13:41] [Server thread/INFO]: [WorldGuard] Loaded configuration for world 'world_the_end'
[18:13:41] [Server thread/INFO]: [WorldGuard] (Games) TNT ignition is PERMITTED.
[18:13:41] [Server thread/INFO]: [WorldGuard] (Games) Lighters are PERMITTED.
[18:13:41] [Server thread/INFO]: [WorldGuard] (Games) Lava fire is blocked.
[18:13:41] [Server thread/INFO]: [WorldGuard] (Games) Fire spread is UNRESTRICTED.
[18:13:41] [Server thread/INFO]: [WorldGuard] Loaded configuration for world 'Games'
[18:13:41] [Server thread/INFO]: [WorldGuard] 0 regions loaded for 'world'
[18:13:41] [Server thread/INFO]: [WorldGuard] 0 regions loaded for 'world_nether'
[18:13:41] [Server thread/INFO]: [WorldGuard] 0 regions loaded for 'world_the_end'
[18:13:42] [Server thread/INFO]: [WorldGuard] 2 regions loaded for 'Games'
[18:13:42] [Server thread/INFO]: [Essentials] Enabling Essentials v2.13.1
[18:13:49] [Server thread/INFO]: Essentials: Using PermissionsEx based permissions.
[18:13:49] [Server thread/INFO]: [Lift] Enabling Lift v48
[18:13:49] [Server thread/INFO]: Lift v48 is now enabled!
[18:13:49] [Server thread/INFO]: [EssentialsProtect] Enabling EssentialsProtect v2.13.1
[18:13:49] [Server thread/INFO]: [EssentialsSpawn] Enabling EssentialsSpawn v2.13.1
[18:13:49] [Server thread/INFO]: [EssentialsChat] Enabling EssentialsChat v2.13.1
[18:13:50] [Server thread/INFO]: Server permissions file permissions.yml is empty, ignoring it
[18:13:53] [Server thread/INFO]: Done (31.375s)! For help, type "help" or "?"
[18:13:53] [Server thread/INFO]: Starting GS4 status listener
[18:13:53] [Query Listener #1/INFO]: Query running on 0.0.0.0:56952
[18:13:54] [Server thread/INFO]: [MobArena] MobArena v0.96.7 is now available!
[18:13:54] [Server thread/INFO]: [MobArena] Your version: v0.96.5
[18:13:56] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2769ms behind, skipping 55 tick(s)
[18:14:13] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2519ms behind, skipping 50 tick(s)
[18:14:14] [User Authenticator #1/INFO]: UUID of player Sonicchen99 is 5465a208a5e54d29b0e34a12857d7cc1
[18:14:15] [Server thread/INFO]: Sonicchen99[/78.52.162.133:60407] logged in with entity id 173 at ([Games] 19.17758213093761, 65.0, 427.4604543241231)