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I recently had a minecraft 1.7.10 lan world that I played on for a while with my brother, but then it started crashing when I opened it. Here is the crash report.

---- Minecraft Crash Report ----
// Ooh. Shiny.

Time: 10/24/16 4:11 PM
Description: Exception in server tick loop

java.lang.NullPointerException: Exception in server tick loop
at codechicken.wirelessredstone.core.RedstoneEtherServer.setDimensionTransmitterCount(RedstoneEtherServer.java:619)
at codechicken.wirelessredstone.core.SaveManager.loadDimensionHash(SaveManager.java:642)
at codechicken.wirelessredstone.core.RedstoneEtherServer.init(RedstoneEtherServer.java:38)
at codechicken.wirelessredstone.core.RedstoneEther.loadServerWorld(RedstoneEther.java:112)
at codechicken.wirelessredstone.core.WRCoreEventHandler.onWorldLoad(WRCoreEventHandler.java:29)
at cpw.mods.fml.common.eventhandler.ASMEventHandler_90_WRCoreEventHandler_onWorldLoad_Load.invoke(.dynamic)
at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54)
at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:140)
at net.minecraft.server.integrated.IntegratedServer.func_71247_a(IntegratedServer.java:73)
at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:92)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:387)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)

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

-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 186657336 bytes (178 MB) / 500719616 bytes (477 MB) up to 1060372480 bytes (1011 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1558 27 mods loaded, 27 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
UCHIJAA mcp{9.05} [Minecraft Coder Pack] (minecraft.jar)
UCHIJAA FML{7.10.99.99} [Forge Mod Loader] (forge-1.7.10-10.13.4.1558-1.7.10.jar)
UCHIJAA Forge{10.13.4.1558} [Minecraft Forge] (forge-1.7.10-10.13.4.1558-1.7.10.jar)
UCHIJAA CodeChickenCore{1.0.4.29} [CodeChicken Core] (minecraft.jar)
UCHIJAA VeinMiner_coremod{0.21.2_build-43} [Core mod] (minecraft.jar)
UCHIJAA voltzenginepreloader{0.0.1} [Voltz Engine Preloader] (minecraft.jar)
UCHIJAA ArchimedesShips{1.7.10 v1.7.1} [Archimedes' Ships] (Archimedes-Ships-Mod-1.7.10.jar)
UCHIJAA customnpcs{1.7.10} [CustomNpcs] (CustomNPCs_1.7.10.jar)
UCHIJAA EE3{0.3.465} [Equivalent Exchange 3] (EquivalentExchange3-1.7.10-0.3.465.jar)
UCHIJAA flansmod{4.10.0} [Flan's Mod] (Flans Mod-1.7.10-4.10.0.jar)
UCHIJAA VoltzEngine{0.8.0.4} [Voltz Engine] (VoltzEngine-1.7.10-0.8.0b4-universal.jar)
UCHIJAA icbm{2.8.0.7} [ICBM] (ICBM-1.7.10-2.8.0b7-universal (1).jar)
UCHIJAA InventoryPets{1.3.3} [Inventory Pets] (inventorypets-1.7.10-1.3.3.jar)
UCHIJAA magicalcrops{1.7.2 - 0.1 ALPHA} [Magical Crops] (magicalcrops-1.7.10_0.1.jar)
UCHIJAA malisiscore{1.7.10-0.14.2} [MalisisCore] (malisiscore-1.7.10-0.14.2.jar)
UCHIJAA malisisdoors{1.7.10-1.13.1} [Malisis' Doors] (malisisdoors-1.7.10-1.13.1 (3).jar)
UCHIJAA mcheli{0.9.3} [MC Helicopter] (mcheli)
UCHIJAA secretroomsmod{@[email protected]} [The SecretRoomsMod] (Secret-Rooms-Mod-1.7.10.jar)
UCHIJAA VeinMiner{0.21.2} [Vein Miner] (VeinMiner-1.7.10_0.21.2.43.jar)
UCHIJAA VeinMinerModSupport{0.21.2} [Mod Support] (VeinMiner-1.7.10_0.21.2.43.jar)
UCHIJAA worldedit{6.0-beta-01} [WorldEdit] (worldedit-forge-mc1.7.10-6.0-beta-01 (1).jar)
UCHIJAA ForgeMultipart{1.1.0.309} [Forge Multipart] (ForgeMultipart-1.7.10-1.1.0.309-universal.jar)
UCHIJAA WR-CBE|Core{1.4.1.7} [WR-CBE Core] (WR-CBE-1.7.10-1.4.1.7-universal.jar)
UCHIJAA WR-CBE|Addons{1.4.1.7} [WR-CBE Addons] (WR-CBE-1.7.10-1.4.1.7-universal.jar)
UCHIJAA WR-CBE|Logic{1.4.1.7} [WR-CBE Logic] (WR-CBE-1.7.10-1.4.1.7-universal.jar)
UCHIJAA McMultipart{1.1.0.309} [Minecraft Multipart Plugin] (ForgeMultipart-1.7.10-1.1.0.309-universal.jar)
UCHIJAA ForgeMicroblock{1.1.0.309} [Forge Microblocks] (ForgeMultipart-1.7.10-1.1.0.309-universal.jar)
GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Player Count: 0 / 8; []
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'