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I have a minecraft forge server and it keep crashing can you help me

---- Minecraft Crash Report ----
// Why did you do that?

Time: 12/14/14 3:29 PM
Description: Exception in server tick loop

java.lang.NullPointerException
at StevenDimDoors.mod_pocketDim.core.PocketManager.createAndRegisterBlacklist(PocketManager.java:699)
at StevenDimDoors.mod_pocketDim.saving.DDSaveHandler.loadAll(DDSaveHandler.java:59)
at StevenDimDoors.mod_pocketDim.core.PocketManager.loadInternal(PocketManager.java:443)
at StevenDimDoors.mod_pocketDim.core.PocketManager.load(PocketManager.java:262)
at StevenDimDoors.mod_pocketDim.EventHookContainer.onWorldLoad(EventHookContainer.java:129)
at net.minecraftforge.event.ASMEventHandler_40_EventHookContainer_onWorldLoad_Load.invoke(.dynamic)
at net.minecraftforge.event.ASMEventHandler.invoke(ASMEventHandler.java:39)
at net.minecraftforge.event.EventBus.post(EventBus.java:108)
at net.minecraft.server.MinecraftServer.func_71247_a(MinecraftServer.java:259)
at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:187)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:445)
at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
Minecraft Version: 1.6.4
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_71, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 402860264 bytes (384 MB) / 808976384 bytes (771 MB) up to 1908932608 bytes (1820 MB)
JVM Flags: 1 total; -Xmx2048M
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP v8.11 FML v6.4.49.965 Minecraft Forge 9.11.1.965 49 mods loaded, 49 mods active
mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
FML{6.4.49.965} [Forge Mod Loader] (ForgeMod.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
Forge{9.11.1.965} [Minecraft Forge] (ForgeMod.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
AppliedEnergistics-Core{rv13.c} [AppliedEnergistics Core] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
CodeChickenCore{0.9.0.9} [CodeChicken Core] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
Micdoodlecore{} [Micdoodle8 Core] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
TConstruct-Preloader{0.0.1} [Tinkers Corestruct] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
OpenModsCore{@[email protected]} [OpenModsCore] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
AppliedEnergistics{rv13.c} [Applied Energistics] (Applied-Energistics-Mod-1.6.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
CoFHCore{2.0.0.5} [CoFH Core] (CoFHCore-2.0.0.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
BuildCraft|Core{4.2.2} [BuildCraft] (buildcraft-A-1.6.4-4.2.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
UniversalElectricity{3.1.0} [Universal Electricity] (Universal-Electricity-3.1.0.115-core.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
ForgeMultipart{1.0.0.219} [Forge Multipart] (ForgeMultipart-universal-1.6.4-1.0.0.219.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
ThermalExpansion{3.0.0.7} [Thermal Expansion] (Thermal-Expansion-Mod-1.6.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
IC2{2.0.397-experimental} [IndustrialCraft 2] (industrialcraft-2_2.0.397-experimental.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
AtomicScience{1.0.0} [Atomic Science] (Atomic_Science_v1.0.0.145.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
Autoutils{1.0.1} [Autoutils] (autoutils-1.6.4-1.0.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
Backpack{1.21.24} [Backpack] (Backpacks-Mod-1.6.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
Mekanism{6.0.2} [Mekanism] (Mekanism-6.0.2.17.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
BigReactors{0.3.4A2} [Big Reactors] (BigReactors-0.3.4A2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
BiomesOPlenty{1.2.1} [Biomes O' Plenty] (BiomesOPlenty-universal-1.6.4-1.2.1.434.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
BuildCraft|Builders{4.2.2} [BC Builders] (buildcraft-A-1.6.4-4.2.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
BuildCraft|Energy{4.2.2} [BC Energy] (buildcraft-A-1.6.4-4.2.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
BuildCraft|Factory{4.2.2} [BC Factory] (buildcraft-A-1.6.4-4.2.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
BuildCraft|Transport{4.2.2} [BC Transport] (buildcraft-A-1.6.4-4.2.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
BuildCraft|Silicon{4.2.2} [BC Silicon] (buildcraft-A-1.6.4-4.2.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
CarpentersBlocks{2.0.8} [Carpenter's Blocks] (Carpenters-Blocks-Mod-1.6.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
Chisel{1.5.0} [Chisel] (chisel-1.6.4-1.5.0fix.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
CoFHLoot{2.0.0.5} [CoFH Loot] (CoFHCore-2.0.0.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
CoFHMasquerade{2.0.0.5} [CoFH Masquerade] (CoFHCore-2.0.0.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
CoFHSocial{2.0.0.5} [CoFH Social] (CoFHCore-2.0.0.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
CoFHWorld{2.0.0.5} [CoFH World] (CoFHCore-2.0.0.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
dimdoors{2.2.4-349} [Dimensional Doors] (DimensionalDoors-2.2.4-349.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
MoCreatures{6.1.0} [DrZhark's Mo'Creatures Mod] (DrZharks MoCreatures Mod v6.1.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
ExtraUtilities{0.3.5} [Extra Utilities] (Extra-Utilities-Mod-1.6.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
FoodPlus{2.7.5PRE3} [§bFood Plus] (FoodPlus-1.6.4-2.7.5PRE3.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
ICBM|Sentry{1.3.4} [ICBM] (ICBM_Sentry_v1.3.4.265.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
ICBM|Explosion{1.3.4} [ICBM] (ICBM_Explosion_v1.3.4.265.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
GalacticraftCore{2.0.14} [Galacticraft Core] (Galacticraft-1.6.4-2.0.14.1084.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
GalacticraftMars{2.0.14} [Galacticraft Mars] (Galacticraft-Planets-1.6.4-2.0.14.1084.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
ICBM|Contraption{1.3.4} [ICBM] (ICBM_Contraption_v1.3.4.265.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
ImmibisCore{57.1.4} [Immibis Core] (Immibis-Core-1.6.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
KeithyUtils{1.3} [Keithy Utils] (KeithyUtils-1.6.4-1.3.30.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
minechem{5.05.101} [MineChem] (Minechem-1.6.4-5.0.5.FINAL.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
OpenMods{0.5.1} [OpenMods] (OpenModsLib-1.6.4-0.5.1-snapshot-214.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
TConstruct{1.6.X_1.5.4dev} [Tinkers' Construct] (TConstruct_mc1.6.4_1.5.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
TMechworks{33.c001660} [Tinkers' Mechworks] (TMechworks_mc1.6.4_0.1.6.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
McMultipart{1.0.0.219} [Minecraft Multipart Plugin] (ForgeMultipart-universal-1.6.4-1.0.0.219.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
ForgeMicroblock{1.0.0.219} [Forge Microblocks] (ForgeMultipart-universal-1.6.4-1.0.0.219.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available
TConstruct Environment: Sane and ready for action. Bugs may be reported.
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Player Count: 0 / 10; []
Is Modded: Definitely; Server brand changed to 'fml,forge'
Type: Dedicated Server (map_server.txt)

This is the mod pack http://www.technicpack.net/api/modpack/race-to-success-modpack

Well it does mention dimensional doors. But you got a latest development version instead of a recommended one for 1.6.4. Always go with recommended unless developmental is the only one for that version of the game. If you still get the error even with v346, report to author.