Edit; Found the log file.
Maybe this can help?
---- Minecraft Crash Report ----
// Why did you do that?
Time: 5/27/14 2:37 AM
Description: Exception in server tick loop
java.lang.NullPointerException
at net.minecraft.nbt.NBTTagCompound.func_74782_a(SourceFile:49)
at aginsun.taleofkingdoms.core.handlers.SaveHandlerToK.SetData(SaveHandlerToK.java:85)
at aginsun.taleofkingdoms.core.handlers.SaveHandlerToK.onPlayerLogout(SaveHandlerToK.java:65)
at cpw.mods.fml.common.registry.GameRegistry.onPlayerLogout(GameRegistry.java:360)
at net.minecraft.server.management.ServerConfigurationManager.func_72367_e(ServerConfigurationManager.java:284)
at net.minecraft.network.NetServerHandler.func_72565_c(NetServerHandler.java:167)
at net.minecraft.network.NetworkListenThread.func_71747_b(NetworkListenThread.java:65)
at net.minecraft.server.dedicated.DedicatedServerListenThread.func_71747_b(SourceFile:30)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:677)
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:275)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:573)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:470)
at net.minecraft.server.ThreadMinecraftServer.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: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_51, Oracle Corporation
Java VM Version: Java HotSpot 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 843033944 bytes (803 MB) / 1014497280 bytes (967 MB) up to 1014497280 bytes (967 MB)
JVM Flags: 2 total; -Xmx1024M -Xms1024M
AABB Pool Size: 2439 (136584 bytes; 0 MB) allocated, 2387 (133672 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 1, tallocated: 63
FML: MCP v7.51 FML v5.2.23.737 Minecraft Forge 7.8.1.737 29 mods loaded, 29 mods active
mcp{7.51} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{5.2.23.737} [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{7.8.1.737} [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
MB-Battlegear2-core{0.4.1} [Mine & Blade: Battlegear 2-core] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
CodeChickenCore{0.8.7.3} [CodeChicken Core] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BukkitForge{Unknown} [bukkitForge] (BukkitForge-latest.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BlockBreak{1.4.6-0} [block Break Event] (BukkitForge-latest.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
DamageIndicatorsMod{2.7.0.1} [Damage Indicators] (1.5.2 DamageIndicators v2.7.0.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
MB-Battlegear2{0.4.1} [Mine & Blade: Battlegear 2] ([1.5.2] Mine & Blade Battlegear 2 - Mod (0.4.1).jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Backpack{1.12.13} [backpack] (backpack-1.12.13-1.5.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BiblioCraft{1.3.3} [biblioCraft] (BiblioCraft[v1.3.3].jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
CustomSpawner{2.2.2} [DrZhark's CustomSpawner] (CustomMobSpawner 2.2.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
DragonMounts{0.99.2} [Dragon Mounts Forge (WIP)] (dragonmount_v0.99.2_mc1.5.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
EE3{pre1h (build 16)} [Equivalent Exchange 3] (Equivalent-Exchange-3-Mod-1.5.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
mod_Invasion{0.11.7} [invasion] (invasion_mod 0.11.7.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Ideas{1} [ideas] (Metallurgy 3.0.0.0.10.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Metallurgy3Core{3.0.0.0.10} [Metallurgy 3 Core] (Metallurgy 3.0.0.0.10.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Metallurgy3Base{3.0.0.0.10} [Metallurgy 3 Base] (Metallurgy 3.0.0.0.10.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Metallurgy3Machines{3.0.0.0.10} [Metallurgy 3 Machines] (Metallurgy 3.0.0.0.10.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Metallurgy3Vanilla{3.0.0.0.10} [Metallurgy 3 Vanilla] (Metallurgy 3.0.0.0.10.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
More Bows{1.5_v1} [More Bows mod] (More bows 1.5.2_2 Forge.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
LegendGear{1.5.2} [LegendGear] (NMcCoy-LegendGear-1.5.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
RPGInventoryMod{1.5.1 8.4} [RPG Inventory Mod] (Rpg Inventory 1.5.2 v1.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
RPGMS{RpgInv8.4} [RpgInv Mage Addon] (Rpg Inventory 1.5.2 v1.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
RPGPlusPlus{RpgInv8.4} [subarakis RPG++ mod] (Rpg Inventory 1.5.2 v1.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
RPGRB{RpgInv8.4} [Rogue and BeastMaster Patch] (Rpg Inventory 1.5.2 v1.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
VanillaShields{RpgInv8.4} [Vanilla Shields Mod] (Rpg Inventory 1.5.2 v1.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
TaleofKingdoms{2.0.0K} [Tale of Kingdoms 2] (Tale-of-Kingdoms-V2.0.0K.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
weaponmod{1.5.2 v1.12.0} [balkon's WeaponMod] (WeaponMod.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BukkitForge Details: BukkitForge null-null (with bukkit API version 1.4.7-R0.1)
Plugins Loaded:[No plugins loaded]
Profiler Position: N/A (disabled)
Vec3 Pool Size: 4619 (258664 bytes; 0 MB) allocated, 4596 (257376 bytes; 0 MB) used
Player Count: 1 / 20; [EntityPlayerMP['kawaiikun69'/214, l='world', x=74.50, y=72.00, z=-223.50]]
Is Modded: Definitely; Server brand changed to 'fml,forge'
Type: Dedicated Server (map_server.txt)