---- Minecraft Crash Report ----

WARNING: coremods are present:
MovingWorldCoreMod (movingworld-1.12-4.340-full.jar)
MoreCommandsLoadingPlugin (MoreCommands-1.12-6.0.jar)
Contact their authors BEFORE contacting forge

// I feel sad now :(

Time: 8/10/17 9:52 AM
Description: Ticking block entity

java.lang.NullPointerException: Ticking block entity
at ladysnake.dissolution.common.tileentities.TileEntityCrystallizer.canSmelt(TileEntityCrystallizer.java:328)
at ladysnake.dissolution.common.tileentities.TileEntityCrystallizer.func_73660_a(TileEntityCrystallizer.java:242)
at net.minecraft.world.World.func_72939_s(World.java:1807)
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:614)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:761)
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:391)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:665)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:523)
at java.lang.Thread.run(Unknown Source)

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

-- Head --
Thread: Server thread
Stacktrace:
at ladysnake.dissolution.common.tileentities.TileEntityCrystallizer.canSmelt(TileEntityCrystallizer.java:328)
at ladysnake.dissolution.common.tileentities.TileEntityCrystallizer.func_73660_a(TileEntityCrystallizer.java:242)

-- Block entity being ticked --
Details:
Name: minecraft:dissolutiontileentitycrystallizer // ladysnake.dissolution.common.tileentities.TileEntityCrystallizer
Block type: ID #296 (tile.crystallizer // ladysnake.dissolution.common.blocks.BlockCrystallizer)
Block data value: 11 / 0xB / 0b1011
Block location: World: (-886,64,3128), Chunk: (at 10,4,8 in -56,195; contains blocks -896,0,3120 to -881,255,3135), Region: (-2,6; contains chunks -64,192 to -33,223, blocks -1024,0,3072 to -513,255,3583)
Actual block type: ID #296 (tile.crystallizer // ladysnake.dissolution.common.blocks.BlockCrystallizer)
Actual block data value: 11 / 0xB / 0b1011
Stacktrace:
at net.minecraft.world.World.func_72939_s(World.java:1807)
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:614)

-- Affected level --
Details:
Level name: world
All players: 1 total; [EntityPlayerMP['Gromyown'/353, l='world', x=-883.57, y=64.00, z=3128.39]]
Chunk stats: ServerChunkCache: 733 Drop: 0
Level seed: 3639922731245417344
Level generator: ID 00 - default, ver 1. Features enabled: true
Level generator options:
Level spawn location: World: (152,64,256), Chunk: (at 8,4,0 in 9,16; contains blocks 144,0,256 to 159,255,271), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 115110240 game time, 1249217 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 153903 (now: false), thunder time: 36955 (now: false)
Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:761)
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:391)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:665)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:523)
at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
Minecraft Version: 1.12
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_144, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 1443195112 bytes (1376 MB) / 2383413248 bytes (2273 MB) up to 2863661056 bytes (2731 MB)
JVM Flags: 2 total; -Xms2G -Xmx3G
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
FML: MCP 9.40 Powered by Forge 14.21.1.2443 18 mods loaded, 18 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UCHIJAAAA minecraft{1.12} [Minecraft] (minecraft.jar)
UCHIJAAAA mcp{9.19} [Minecraft Coder Pack] (minecraft.jar)
UCHIJAAAA FML{8.0.99.99} [Forge Mod Loader] (forge-1.12-14.21.1.2443-universal.jar)
UCHIJAAAA forge{14.21.1.2443} [Minecraft Forge] (forge-1.12-14.21.1.2443-universal.jar)
UCHIJAAAA com.elytradev.movingworld.common.asm.coremod{} [MovingWorld CORE] (minecraft.jar)
UCHIJAAAA dailies{1.12-6} [Bailey's Dailies] (Baileys-Dailies-Mod-1.12.jar)
UCHIJAAAA biomesoplenty{7.0.0.2291} [Biomes O' Plenty] (BiomesOPlenty-1.12-7.0.0.2291-universal.jar)
UCHIJAAAA movingworld{1.12-4.340} [Moving World] (movingworld-1.12-4.340-full.jar)
UCHIJAAAA davincisvessels{@DVESSELSVER@} [Davinci's Vessels] (davincisvessels-1.12-5.335-full.jar)
UCHIJAAAA dissolution{0.4.2.3} [Dissolution] (dissolution-0.4.2.3.jar)
UCHIJAAAA dldungeonsjdg{1.9.3} [Doomlike Dungeons] (DoomlikeDungeons-1.9.3-MC1.12.jar)
UCHIJAAAA journeymap{1.12-5.4.9} [JourneyMap] (journeymap-1.12-5.4.9.jar)
UCHIJAAAA jaff{1.7_for_1.12} [Just a Few Fish] (JustAFewFish-1.7_for_1.12.jar)
UCHIJAAAA mrnobody_morecommands{5.0} [MoreCommands] (MoreCommands-1.12-6.0.jar)
UCHIJAAAA musiccraft{3.2.3} [MusicCraft] (MusicCraft-3.2.3.jar)
UCHIJAAAA reptilemod{3.8.2} [Reptile Mod] (Reptile-1.12.jar)
UCHIJAAAA simplesponge{3.5} [Simple Sponge] (Simple-Sponge-1.12.jar)
UCHIJAAAA toroquest{1.11.2-5.1} [ToroQuest] (Toroquest-1.12.jar)
Loaded coremods (and transformers):
MovingWorldCoreMod (movingworld-1.12-4.340-full.jar)

MoreCommandsLoadingPlugin (MoreCommands-1.12-6.0.jar)
com.mrnobody.morecommands.asm.transform.TransformBlockRailBase
com.mrnobody.morecommands.asm.transform.TransformForgeHooks
com.mrnobody.morecommands.asm.transform.TransformItemStack
com.mrnobody.morecommands.asm.transform.TransformStyle
Profiler Position: N/A (disabled)
Player Count: 1 / 20; [EntityPlayerMP['Gromyown'/353, l='world', x=-883.57, y=64.00, z=3128.39]]
Is Modded: Definitely; Server brand changed to 'fml,forge'
Type: Dedicated Server (map_server.txt)

Well, the crystallizer will be completely rewritten next update so that should fix the issue... In the meantime, I will try to get a small fix out.

Does it happen under special circumstances ? It works fine for me.