crash server crash on start up

[Astronimo]

so me and my friend have spent hours in this world, and one day it randomly stopped working, on start up on the server, both of the server windows open but after it opens on port 25565, it crashes instantly. i have looked in the faq and seen a few fixes for the problem, but none worked. if someone who can read this crash and help me out will make my week, thanks!

---- Minecraft Crash Report ----
// Everything's going to plan. No, really, that was supposed to happen.

Time: 06/08/17 5:17 PM
Description: Exception in server tick loop

java.lang.IllegalArgumentException: Slot 1004 is already occupied by com.advGenetics.Blocks.BlockDNABreeder@3e5eff32 when adding com.sirolf2009.necromancy.block.BlockScentBurner@d48799
    at net.minecraft.block.Block.<init>(Block.java:349)
    at net.minecraft.block.BlockContainer.<init>(SourceFile:9)
    at com.sirolf2009.necromancy.block.BlockScentBurner.<init>(BlockScentBurner.java:17)
    at com.sirolf2009.necromancy.block.BlockNecromancy.initBlocks(BlockNecromancy.java:49)
    at com.sirolf2009.necromancy.Necromancy.init(Necromancy.java:127)
    at com.sirolf2009.necromancy.Necromancy.init(Necromancy.java:99)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:545)
    at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
    at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
    at com.google.common.eventbus.EventBus.dispatch(EventBus.java:313)
    at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)
    at com.google.common.eventbus.EventBus.post(EventBus.java:267)
    at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:201)
    at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:181)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
    at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
    at com.google.common.eventbus.EventBus.dispatch(EventBus.java:313)
    at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)
    at com.google.common.eventbus.EventBus.post(EventBus.java:267)
    at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:112)
    at cpw.mods.fml.common.Loader.initializeMods(Loader.java:699)
    at cpw.mods.fml.server.FMLServerHandler.finishServerLoading(FMLServerHandler.java:107)
    at cpw.mods.fml.common.FMLCommonHandler.onServerStarted(FMLCommonHandler.java:355)
    at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:142)
    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 10 (amd64) version 10.0
    Java Version: 1.8.0_121, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 2137030712 bytes (2038 MB) / 2340421632 bytes (2232 MB) up to 2863661056 bytes (2731 MB)
    JVM Flags: 2 total; -Xmx3G -Xms2G
    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 9.11.1.965 116 mods loaded, 116 mods active
    mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized
    FML{6.4.49.965} [Forge Mod Loader] (BTeam.jar) Unloaded->Constructed->Pre-initialized->Initialized
    Forge{9.11.1.965} [Minecraft Forge] (BTeam.jar) Unloaded->Constructed->Pre-initialized->Initialized
    CodeChickenCore{0.9.0.9} [CodeChicken Core] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized
    Micdoodlecore{} [Micdoodle8 Core] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized
    NotEnoughItems{1.6.1.9} [Not Enough Items] (notenoughitems 1.6.1.9.jar) Unloaded->Constructed->Pre-initialized->Initialized
    OpenEye{0.6} [OpenEye] (openeye-0.6-1.6.4.jar) Unloaded->Constructed->Pre-initialized->Initialized
    PowerCrystalsCore{1.1.8} [PowerCrystals Core] (powercrystalscore-1.1.8-9.jar) Unloaded->Constructed->Pre-initialized->Initialized
    TConstruct-Preloader{0.0.1} [Tinkers Corestruct] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized
    OpenModsCore{@VERSION@} [OpenModsCore] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized
    advancedgenetics{v1.4.3} [Advanced Genetics] (advgen.jar) Unloaded->Constructed->Pre-initialized->Initialized
    ArchimedesShipsMod{1.6.4 v1.4.5} [Archimedes' Ships] (archimedesships.zip) Unloaded->Constructed->Pre-initialized->Initialized
    Artifice{1.6.4R1.1.3} [Artifice] (artifice-1.1.3-243.jar) Unloaded->Constructed->Pre-initialized->Initialized
    ArtificeCompat|EE3{1.6.4R1.1.3} [Artifice Compat: EE3] (artifice-1.1.3-243.jar) Unloaded->Constructed->Pre-initialized->Initialized
    ArtificeCompat|Forestry{1.6.4R1.1.3} [Artifice Compat: Forestry] (artifice-1.1.3-243.jar) Unloaded->Constructed->Pre-initialized->Initialized
    ArtificeCompat|Vanilla{1.6.4R1.1.3} [Artifice Compat: Vanilla] (artifice-1.1.3-243.jar) Unloaded->Constructed->Pre-initialized->Initialized
    MineFactoryReloaded{1.6.4R2.7.9} [MineFactory Reloaded] (minefactoryreloaded-2.7.9-final.jar) Unloaded->Constructed->Pre-initialized->Initialized
    ArtificeCompat|MFR{1.6.4R1.1.3} [Artifice Compat: MFR] (artifice-1.1.3-243.jar) Unloaded->Constructed->Pre-initialized->Initialized
    ArtificeCompat|Buildcraft{1.6.4R1.1.3} [Artifice Compat: Buildcraft] (artifice-1.1.3-243.jar) Unloaded->Constructed->Pre-initialized->Initialized
    ArtificeCompat|ForgeMicroblock{1.6.4R1.1.3} [Artifice Compat: ForgeMicroblock] (artifice-1.1.3-243.jar) Unloaded->Constructed->Pre-initialized->Initialized
    ArtificeCompat|Thaumcraft{1.6.4R1.1.3} [Artifice Compat: Thaumcraft] (artifice-1.1.3-243.jar) Unloaded->Constructed->Pre-initialized->Initialized
    AutoBlocks{1.0.0} [AutoBlocks] (autoblocks 1.0.0.zip) Unloaded->Constructed->Pre-initialized->Initialized
    Autoutils{1.0.1} [Autoutils] (autoutils-1.6.4-1.0.1.jar) Unloaded->Constructed->Pre-initialized->Initialized
    betterstorage{0.8.0.47} [BetterStorage] (betterstorage-1.6.4-0.8.0.47.jar) Unloaded->Constructed->Pre-initialized->Initialized
    BiblioCraft{1.5.5} [BiblioCraft] (bibliocraft[v1.5.5].zip) Unloaded->Constructed->Pre-initialized->Initialized
    Natura{2.1.14} [Natura] (natura_mc1.6.X_2.1.14.jar) Unloaded->Constructed->Pre-initialized->Initialized
    BiomesOPlenty{1.2.1} [Biomes O' Plenty] (biomesoplenty-universal-1.6.4-1.2.1.434.jar) Unloaded->Constructed->Pre-initialized->Initialized
    BiblioWoodsBoP{1.3} [BiblioWoods Biomes O'Plenty Edition] (bibliowoods[biomesoplenty][v1.3].zip) Unloaded->Constructed->Pre-initialized->Initialized
    BiblioWoodsNatura{1.1} [BiblioWoods Natura Edition] (bibliowoods[natura][v1.1].zip) Unloaded->Constructed->Pre-initialized->Initialized
    CarpentersBlocks{2.1.0} [Carpenter's Blocks] (carpentersblocks v2.1.0 - MC 1.6+.zip) Unloaded->Constructed->Pre-initialized->Initialized
    CoFHCore{2.0.0.5} [CoFH Core] (cofhcore-2.0.0.5.jar) Unloaded->Constructed->Pre-initialized->Initialized
    CoFHLoot{2.0.0.5} [CoFH Loot] (cofhcore-2.0.0.5.jar) Unloaded->Constructed->Pre-initialized->Initialized
    CoFHMasquerade{2.0.0.5} [CoFH Masquerade] (cofhcore-2.0.0.5.jar) Unloaded->Constructed->Pre-initialized->Initialized
    CoFHSocial{2.0.0.5} [CoFH Social] (cofhcore-2.0.0.5.jar) Unloaded->Constructed->Pre-initialized->Initialized
    CoFHWorld{2.0.0.5} [CoFH World] (cofhcore-2.0.0.5.jar) Unloaded->Constructed->Pre-initialized->Initialized
    ConfigMod{v1.0} [Extended Mod Config] (configmod for MC v1.6.4.zip) Unloaded->Constructed->Pre-initialized->Initialized
    CoroAI{v1.0} [CoroAI] (coroutil for MC v1.6.4.zip) Unloaded->Constructed->Pre-initialized->Initialized
    darwin{0.2.3} [Darwin] (darwin_0.2.3.jar) Unloaded->Constructed->Pre-initialized->Initialized
    DragonMounts{r34} [Dragon Mounts] (dragonmount_r35_mc1.6.x.zip) Unloaded->Constructed->Pre-initialized->Initialized
    EnhancedCore{1.1.3} [EnhancedCore] (enhancedcore_1.1.3.jar) Unloaded->Constructed->Pre-initialized->Initialized
    EP2{1.0.9} [EnhancedPortals 2] (enhancedportals-2_1.0.9.jar) Unloaded->Constructed->Pre-initialized->Initialized
    ExtendedRenderer{v1.0} [Extended Renderer] (extendedrenderer for MC v1.6.4.zip) Unloaded->Constructed->Pre-initialized->Initialized
    FlansMod{4.1.1} [Flans Mod] (flansmod-4.1.1.jar) Unloaded->Constructed->Pre-initialized->Initialized
    FoodPlus{2.8PRE4} [§bFood Plus] (foodplus-1.6.4-2.8PRE4.jar) Unloaded->Constructed->Pre-initialized->Initialized
    633{${mod.version}} [Fossil/Archeology: Reported] (fossilsarch-reported-v1.0.6.jar) Unloaded->Constructed->Pre-initialized->Initialized
    cfm{3.3.2} [§6MrCrayfish's Furniture Mod] (furnituremodv3.3.3(1.6.4).jar) Unloaded->Constructed->Pre-initialized->Initialized
    GalacticraftCore{2.0.13} [Galacticraft Core] (galacticraft-1.6.4-2.0.13.1063.jar) Unloaded->Constructed->Pre-initialized->Initialized
    GalacticraftMars{2.0.13} [Galacticraft Mars] (galacticraft-planets-1.6.4-2.0.13.1063.jar) Unloaded->Constructed->Pre-initialized->Initialized
    hamstermod{0.1} [Hamster Mod] (hamsterrific[1.6.4]V2.1.zip) Unloaded->Constructed->Pre-initialized->Initialized
    hamstersforever{1.0} [Hamsters Forever] (hamstersforever-1.0.jar) Unloaded->Constructed->Pre-initialized->Initialized
    Hats{2.1.8} [Hats] (hats2.1.8.zip) Unloaded->Constructed->Pre-initialized->Initialized
    iChunUtil{2.4.0} [iChunUtil] (ichunutil2.4.0.zip) Unloaded->Constructed->Pre-initialized->Initialized
    ImmibisCore{57.2.0} [Immibis Core] (immibis-core-57.2.0.jar) Unloaded->Constructed->Pre-initialized->Initialized
    inventorytweaks{1.56} [Inventory Tweaks] (InventoryTweaks-MC1.6.2-1.56-b77.jar) Unloaded->Constructed->Pre-initialized->Initialized
    LiquidXP{57.1.2} [Liquid XP] (liquid-xp-57.1.2.jar) Unloaded->Constructed->Pre-initialized->Initialized
    MFR Compat Forestry Trees{1.0} [MFR Compat Forestry Trees] (minefactoryreloaded-2.7.9-final.jar) Unloaded->Constructed->Pre-initialized->Initialized
    MFR Compat Extra Trees{1.0} [MFR Compat Extra Trees] (minefactoryreloaded-2.7.9-final.jar) Unloaded->Constructed->Pre-initialized->Initialized
    MineFactoryReloaded|CompatAppliedEnergistics{1.6.4R2.7.9} [MFR Compat: Applied Energistics] (minefactoryreloaded-2.7.9-final.jar) Unloaded->Constructed->Pre-initialized->Initialized
    MineFactoryReloaded|CompatAtum{1.6.4R2.7.9} [MFR Compat: Atum] (minefactoryreloaded-2.7.9-final.jar) Unloaded->Constructed->Pre-initialized->Initialized
    MineFactoryReloaded|CompatBackTools{1.6.4R2.7.9} [MFR Compat: BackTools] (minefactoryreloaded-2.7.9-final.jar) Unloaded->Constructed->Pre-initialized->Initialized
    MineFactoryReloaded|CompatBuildCraft{1.6.4R2.7.9} [MFR Compat: BuildCraft] (minefactoryreloaded-2.7.9-final.jar) Unloaded->Constructed->Pre-initialized->Initialized
    MineFactoryReloaded|CompatChococraft{1.6.4R2.7.9} [MFR Compat: Chococraft] (minefactoryreloaded-2.7.9-final.jar) Unloaded->Constructed->Pre-initialized->Initialized
    MineFactoryReloaded|CompatExtraBiomes{1.6.4R2.7.9} [MFR Compat: ExtraBiomes] (minefactoryreloaded-2.7.9-final.jar) Unloaded->Constructed->Pre-initialized->Initialized
    MineFactoryReloaded|CompatForestry{1.6.4R2.7.9} [MFR Compat: Forestry] (minefactoryreloaded-2.7.9-final.jar) Unloaded->Constructed->Pre-initialized->Initialized
    MineFactoryReloaded|CompatForestryPre{1.6.4R2.7.9} [MFR Compat: Forestry (part 2)] (minefactoryreloaded-2.7.9-final.jar) Unloaded->Constructed->Pre-initialized->Initialized
    MineFactoryReloaded|CompatForgeMicroblock{1.6.4R2.7.9} [MFR Compat: ForgeMicroblock] (minefactoryreloaded-2.7.9-final.jar) Unloaded->Constructed->Pre-initialized->Initialized
    MineFactoryReloaded|CompatIC2{1.6.4R2.7.9} [MFR Compat: IC2] (minefactoryreloaded-2.7.9-final.jar) Unloaded->Constructed->Pre-initialized->Initialized
    MineFactoryReloaded|CompatMystcraft{1.6.4R2.7.9} [MFR Compat: Mystcraft] (minefactoryreloaded-2.7.9-final.jar) Unloaded->Constructed->Pre-initialized->Initialized
    MineFactoryReloaded|CompatPams{1.6.4R2.7.9} [MFR Compat: Pam's Mods] (minefactoryreloaded-2.7.9-final.jar) Unloaded->Constructed->Pre-initialized->Initialized
    ForgeMultipart{1.0.0.250} [Forge Multipart] (ForgeMultipart-universal-1.6.4-1.0.0.250.jar) Unloaded->Constructed->Pre-initialized->Initialized
    ProjRed|Core{4.3.7.32} [ProjectRed] (projectredbase-1.6.4-4.3.7.32.jar) Unloaded->Constructed->Pre-initialized->Initialized
    ProjRed|Exploration{4.3.7.32} [ProjectRed-Exploration] (projectredworld-1.6.4-4.3.7.32.jar) Unloaded->Constructed->Pre-initialized->Initialized
    MineFactoryReloaded|CompatProjRed{1.6.4R2.7.9} [MFR Compat ProjectRed] (minefactoryreloaded-2.7.9-final.jar) Unloaded->Constructed->Pre-initialized->Initialized
    MineFactoryReloaded|CompatRailcraft{1.6.4R2.7.9} [MFR Compat: Railcraft] (minefactoryreloaded-2.7.9-final.jar) Unloaded->Constructed->Pre-initialized->Initialized
    MineFactoryReloaded|CompatRP2{1.6.4R2.7.9} [MFR Compat: RP2] (minefactoryreloaded-2.7.9-final.jar) Unloaded->Constructed->Pre-initialized->Initialized
    MineFactoryReloaded|CompatSufficientBiomes{1.6.4R2.7.9} [MFR Compat: Sufficient Biomes] (minefactoryreloaded-2.7.9-final.jar) Unloaded->Constructed->Pre-initialized->Initialized
    MineFactoryReloaded|CompatThaumcraft{1.6.4R2.7.9} [MFR Compat: Thaumcraft] (minefactoryreloaded-2.7.9-final.jar) Unloaded->Constructed->Pre-initialized->Initialized
    ThermalExpansion{3.0.0.7} [Thermal Expansion] (thermalexpansion-3.0.0.7.jar) Unloaded->Constructed->Pre-initialized->Initialized
    MineFactoryReloaded|CompatThermalExpansion{1.6.4R2.7.9} [MFR Compat: Thermal Expansion] (minefactoryreloaded-2.7.9-final.jar) Unloaded->Constructed->Pre-initialized->Initialized
    MineFactoryReloaded|CompatTwilightForest{1.6.4R2.7.9} [MFR Compat: TwilightForest] (minefactoryreloaded-2.7.9-final.jar) Unloaded->Constructed->Pre-initialized->Initialized
    MineFactoryReloaded|CompatVanilla{1.6.4R2.7.9} [MFR Compat: Vanilla] (minefactoryreloaded-2.7.9-final.jar) Unloaded->Constructed->Pre-initialized->Initialized
    MineFactoryReloaded|CompatXyCraft{1.6.4R2.7.9} [MFR Compat: XyCraft] (minefactoryreloaded-2.7.9-final.jar) Unloaded->Constructed->Pre-initialized->Initialized
    AS_Minions{1.7.9b} [Minions] (minions_1.6.4.zip) Unloaded->Constructed->Pre-initialized->Initialized
    BuildMod{v1.0} [Build Mod] (modbuild for MC v1.6.4.zip) Unloaded->Constructed->Pre-initialized->Initialized
    Morph{0.7.1} [Morph] (morphbeta-0.7.1.zip) Unloaded->Constructed->Pre-initialized->Initialized
    necromancy{1.5} [Necromancy] (necromancy_1.6.4.zip) Unloaded->Constructed->Pre-initialized->Errored
    NEIPlugins{1.1.0.6} [NEI Plugins] (neiplugins-1.1.0.6.jar) Unloaded->Constructed->Pre-initialized->Initialized
    NotEnoughCodecs{0.1} [NotEnoughCodecs] (notenoughcodecs-0.1.jar) Unloaded->Constructed->Pre-initialized->Initialized
    notenoughkeys{0.0.4} [Not Enough Keys] (notenoughkeys-1.6.4-0.0.4.jar) Unloaded->Constructed->Pre-initialized->Initialized
    OpenMods{0.5.1} [OpenMods] (openmodslib-0.5.1.jar) Unloaded->Constructed->Pre-initialized->Initialized
    OpenBlocks{1.2.9} [OpenBlocks] (openblocks-1.2.9.jar) Unloaded->Constructed->Pre-initialized->Initialized
    ProjRed|Transmission{4.3.7.32} [ProjectRed-Transmission] (projectredintegration-1.6.4-4.3.7.32.jar) Unloaded->Constructed->Pre-initialized->Initialized
    ProjRed|Transportation{4.3.7.32} [ProjectRed-Transportation] (projectredmechanical-BETA-1.6.4-4.3.7.32.jar) Unloaded->Constructed->Pre-initialized->Initialized
    Waila{1.5.2a} [Waila] (waila_1.5.2a.zip) Unloaded->Constructed->Pre-initialized->Initialized
    TConstruct{1.6.X_1.5.5.7} [Tinkers' Construct] (tconstruct_mc1.6.4_1.5.5.7.jar) Unloaded->Constructed->Pre-initialized->Initialized
    ProjRed|Compatibility{4.3.7.32} [ProjectRed-Compatibility] (projectredcompat-1.6.4-4.3.7.32.jar) Unloaded->Constructed->Pre-initialized->Initialized
    ProjRed|Integration{4.3.7.32} [ProjectRed-Integration] (projectredintegration-1.6.4-4.3.7.32.jar) Unloaded->Constructed->Pre-initialized->Initialized
    ProjRed|Illumination{4.3.7.32} [ProjectRed-Illumination] (projectredlighting-1.6.4-4.3.7.32.jar) Unloaded->Constructed->Pre-initialized->Initialized
    ProjRed|Expansion{4.3.7.32} [ProjectRed-Expansion] (projectredmechanical-BETA-1.6.4-4.3.7.32.jar) Unloaded->Constructed->Pre-initialized->Initialized
    QuantumCraft{1.1} [qCraft] (qcraft1.1.jar) Unloaded->Constructed->Pre-initialized->Initialized
    RandomThings{1.9} [Random Things] (random things v. 1.9 [MC 1.6.4].jar) Unloaded->Constructed->Pre-initialized->Initialized
    secretroomsmod{4.6.2} [The SecretRoomsMod] (secretroomsmod-universal-1.6.4-4.6.2.319.jar) Unloaded->Constructed->Pre-initialized->Initialized
    Statues{2.1.1} [Statues] (statues-1.6.4-2.1.1.jar) Unloaded->Constructed->Pre-initialized->Initialized
    Sync{2.2.2} [Sync] (sync2.2.2.zip) Unloaded->Constructed->Pre-initialized->Initialized
    TMechworks{33.c001660} [Tinkers' Mechworks] (tmechworks_mc1.6.4_0.1.6.jar) Unloaded->Constructed->Pre-initialized->Initialized
    TrailMix{2.0.0} [TrailMix] (trailmix2.0.0.zip) Unloaded->Constructed->Pre-initialized->Initialized
    tropicraftmod{v5.1.7 for MC 1.6.4} [Tropicraft] (tropicraft v5.1.7 Mod for MC v1.6.4.jar) Unloaded->Constructed->Pre-initialized->Initialized
    volleyballmod{v5.1.7 for MC 1.6.4} [Volleyball] (tropicraft v5.1.7 Mod for MC v1.6.4.jar) Unloaded->Constructed->Pre-initialized->Initialized
    Waypoints{1.0.2} [Waypoints] (waypoints-1.6.4-1.0.2fix.jar) Unloaded->Constructed->Pre-initialized->Initialized
    AIBlock{v1.0} [AIBlock] (weather v1.591 Mod for MC v1.6.4.zip) Unloaded->Constructed->Pre-initialized->Initialized
    WeatherMod{1.591} [Weather and Tornadoes] (weather v1.591 Mod for MC v1.6.4.zip) Unloaded->Constructed->Pre-initialized->Initialized
    witchery{0.19.2} [Witchery] (witchery-1.6.4-0.19.2.zip) Unloaded->Constructed->Pre-initialized->Initialized
    worldofdinos{1.0} [World of Dinos] (worldofdinos-1.1.jar) Unloaded->Constructed->Pre-initialized->Initialized
    Chisel{1.5.0} [Chisel] (zchisel-1.6.4-1.5.0fix.jar) Unloaded->Constructed->Pre-initialized->Initialized
    McMultipart{1.0.0.250} [Minecraft Multipart Plugin] (ForgeMultipart-universal-1.6.4-1.0.0.250.jar) Unloaded->Constructed->Pre-initialized->Initialized
    ForgeMicroblock{1.0.0.250} [Forge Microblocks] (ForgeMultipart-universal-1.6.4-1.0.0.250.jar) Unloaded->Constructed->Pre-initialized->Initialized
    TConstruct Environment: Environment seems clean, however you are using a modpack; please report it to the pack author, not us!
    Profiler Position: N/A (disabled)
    Is Modded: Definitely; Server brand changed to 'fml,forge'
    Type: Dedicated Server (map_server.txt)

 

[Torezu]

This a fairly simple block ID conflict.  It probably didn't cause a crash until recently because no one had placed the Necromancy block that's causing it.  Go find the server's config files, and use an ID fixer/resolver utility to figure out where you have a free block ID to assign to the Necromancy block.  Then you'll need to actually do that reassignment in both the server's and client's config files.

The thing is that this is a pack that you didn't make, so I wonder whether you added mods to it, or changed the configs yourself for some reason, or if this is a glitch in the pack, or if you're using an older version of the pack without realizing it.