Minecraft/Server-Client Log

[12:49:59] [main/INFO]: Setting user: WookiePurPur
[12:50:04] [main/WARN]: Skipping bad option: lastServer:
[12:50:04] [main/INFO]: LWJGL Version: 2.9.4
[12:50:11] [main/INFO]: Reloading ResourceManager: Default, FMLFileResourcePack:Forge Mod Loader, FMLFileResourcePack:Minecraft Forge, FMLFileResourcePack:AI Improvements, FMLFileResourcePack:Animania, FMLFileResourcePack:Backpacks!, FMLFileResourcePack:B.A.S.E, FMLFileResourcePack:Better Foliage, FMLFileResourcePack:ClearSpam, FMLFileResourcePack:Clumps, FMLFileResourcePack:CraftStudio API, FMLFileResourcePack:CustomNPCs, FMLFileResourcePack:HelpFixer, FMLFileResourcePack:Waila, FMLFileResourcePack:Inventory Pets, FMLFileResourcePack:Inventory Tweaks, FMLFileResourcePack:JourneyMap, FMLFileResourcePack:Mantle, FMLFileResourcePack:Mouse Tweaks, FMLFileResourcePack:MindCalf-Reborn Dimensions, FMLFileResourcePack:MindCalf-Reborn Flatlands, FMLFileResourcePack:MindCalf-Reborn Normal World, FMLFileResourcePack:Open Terrain Generator, FMLFileResourcePack:Pam's HarvestCraft, FMLFileResourcePack:Placeable Items Mod, FMLFileResourcePack:Reborn Core, FMLFileResourcePack:Recurrent Complex, FMLFileResourcePack:Sophisticated Wolves, FMLFileResourcePack:Steve's Carts 2, FMLFileResourcePack:bspkrsCore, FMLFileResourcePack:Treecapitator, FMLFileResourcePack:Varied Commodities, FMLFileResourcePack:Waystones, Better Foliage generated, Better Vanilla 1.4.zip
[12:50:16] [main/WARN]: Skipping bad option: lastServer:
[12:50:23] [Sound Library Loader/INFO]: Starting up SoundSystem...
[12:50:24] [Thread-8/INFO]: Initializing LWJGL OpenAL
[12:50:24] [Thread-8/INFO]: (The LWJGL binding of OpenAL.  For more information, see http://www.lwjgl.org)
[12:50:24] [Thread-8/INFO]: OpenAL initialized.
[12:50:24] [Sound Library Loader/INFO]: Sound engine started
[12:50:29] [main/INFO]: Created: 2048x1024 textures-atlas
[12:50:39] [main/WARN]: Skipping bad option: lastServer:
[12:50:39] [main/INFO]: Narrator library for x64 successfully loaded
[12:50:47] [Server thread/INFO]: Starting integrated minecraft server version 1.12.2
[12:50:47] [Server thread/INFO]: Generating keypair
[12:51:02] [Server thread/ERROR]: Encountered an unexpected exception
java.lang.RuntimeException: null
    at com.pg85.otg.customobjects.CustomObjectStructureCache.LoadStructureCache(CustomObjectStructureCache.java:1315) ~[CustomObjectStructureCache.class:?]
    at com.pg85.otg.customobjects.CustomObjectStructureCache.<init>(CustomObjectStructureCache.java:67) ~[CustomObjectStructureCache.class:?]
    at com.pg85.otg.forge.ForgeWorld.provideWorldInstance(ForgeWorld.java:1268) ~[ForgeWorld.class:?]
    at com.pg85.otg.forge.WorldLoader.getOrCreateForgeWorld(WorldLoader.java:357) ~[WorldLoader.class:?]
    at com.pg85.otg.forge.OTGWorldType.getBiomeProvider(OTGWorldType.java:74) ~[OTGWorldType.class:?]
    at net.minecraft.world.WorldProvider.func_76572_b(WorldProvider.java:58) ~[aym.class:?]
    at net.minecraft.world.WorldProvider.func_76558_a(WorldProvider.java:40) ~[aym.class:?]
    at net.minecraft.world.WorldServer.<init>(WorldServer.java:116) ~[oo.class:?]
    at WorldServerOF.<init>(WorldServerOF.java:25) ~[WorldServerOF.class:?]
    at net.minecraft.server.integrated.IntegratedServer.func_71247_a(IntegratedServer.java:81) ~[chd.class:?]
    at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:196) ~[chd.class:?]
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:484) [MinecraftServer.class:?]
    at java.lang.Thread.run(Unknown Source) [?:1.8.0_152]
[12:51:02] [Server thread/ERROR]: This crash report has been saved to: C:\Users\Wookiee\AppData\Roaming\.technic\modpacks\mindcalf\crash-reports\crash-2017-11-20_12.51.02-server.txt
[12:51:02] [Server thread/INFO]: Stopping server
[12:51:02] [Server thread/INFO]: Saving players
[12:51:02] [Server thread/INFO]: Saving worlds