Minecraft Forums

---- Minecraft Crash Report ----
// Surprise! Haha. Well, this is awkward.

Time: 23/08/16 12:30
Description: Updating screen events

java.lang.NoClassDefFoundError: io/netty/bootstrap/ServerBootstrap
at net.minecraft.network.NetworkSystem.func_151270_a(NetworkSystem.java:107)
at net.minecraft.client.Minecraft.func_71371_a(Minecraft.java:2136)
at cpw.mods.fml.client.FMLClientHandler.tryLoadExistingWorld(FMLClientHandler.java:696)
at net.minecraft.client.gui.GuiSelectWorld.func_146615_e(GuiSelectWorld.java:183)
at net.minecraft.client.gui.GuiSelectWorld.func_146284_a(GuiSelectWorld.java:130)
at net.minecraft.client.gui.GuiScreen.func_73864_a(GuiScreen.java:225)
at net.minecraft.client.gui.GuiScreen.func_146274_d(GuiScreen.java:296)
at net.minecraft.client.gui.GuiScreen.func_146269_k(GuiScreen.java:268)
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1640)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:973)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:898)
at net.minecraft.client.main.Main.main(SourceFile:148)
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 net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
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 info.mineshafter.GameStarter.main(GameStarter.java:24)
Caused by: java.lang.ClassNotFoundException: io.netty.bootstrap.ServerBootstrap
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 23 more
Caused by: java.lang.NoClassDefFoundError: io/netty/bootstrap/AbstractBootstrap
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
... 25 more
Caused by: java.lang.ClassNotFoundException: io.netty.bootstrap.AbstractBootstrap
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:101)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 29 more

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

-- Head --
Stacktrace:
at net.minecraft.network.NetworkSystem.func_151270_a(NetworkSystem.java:107)
at net.minecraft.client.Minecraft.func_71371_a(Minecraft.java:2136)
at cpw.mods.fml.client.FMLClientHandler.tryLoadExistingWorld(FMLClientHandler.java:696)
at net.minecraft.client.gui.GuiSelectWorld.func_146615_e(GuiSelectWorld.java:183)
at net.minecraft.client.gui.GuiSelectWorld.func_146284_a(GuiSelectWorld.java:130)
at net.minecraft.client.gui.GuiScreen.func_73864_a(GuiScreen.java:225)
at net.minecraft.client.gui.GuiScreen.func_146274_d(GuiScreen.java:296)
at net.minecraft.client.gui.GuiScreen.func_146269_k(GuiScreen.java:268)
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1640)

-- Affected screen --
Details:
Screen name: net.minecraft.client.gui.GuiMainMenu
Stacktrace:
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:973)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:898)
at net.minecraft.client.main.Main.main(SourceFile:148)
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 net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
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 info.mineshafter.GameStarter.main(GameStarter.java:24)

-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Windows 10 (x86) version 10.0
Java Version: 1.8.0_101, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 7512 bytes (0 MB) / 523501568 bytes (499 MB) up to 523501568 bytes (499 MB)
JVM Flags: 3 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M -Xmn128M
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1614 Optifine OptiFine_1.7.10_HD_U_D6 101 mods loaded, 101 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-1.7.10-10.13.4.1614-1.7.10.jar)
UCHIJAA Forge{10.13.4.1614} [Minecraft Forge] (forge-1.7.10-10.13.4.1614-1.7.10.jar)
UCHIJAA AM2-Preloader{0.0.2} [AMCore] (minecraft.jar)
UCHIJAA CodeChickenCore{1.0.7.46} [CodeChicken Core] (minecraft.jar)
UCHIJAA NotEnoughItems{1.0.5.110} [Not Enough Items] (NotEnoughItems-1.7.10-1.0.5.110-universal.jar)
UCHIJAA OpenModsCore{0.9.1} [OpenModsCore] (minecraft.jar)
UCHIJAA <CoFH ASM>{000} [CoFH ASM Data Initialization] (minecraft.jar)
UCHIJAA FastCraft{1.23} [FastCraft] (fastcraft-1.23.jar)
UCHIJAA battlegear2{1.7.10} [Mine & Blade Battlegear 2 - Bullseye] (1.7.10-MB_Battlegear2-Bullseye-1.0.8.3.jar)
UCHIJAA AnimationAPI{1.2.4} [AnimationAPI] (AnimationAPI-1.7.10-1.2.4.jar)
UCHIJAA arsmagica2{1.4.0.008} [Ars Magica 2] (1.7.10_AM2-1.4.0.008.jar)
UCHIJAA lucky{5.1.0} [Lucky Block] ([1-7-10]_Lucky_Block_v5-1-0.jar)
UCHIJAA securitycraft{v1.7.4.1} [SecurityCraft] ([1.7.10] SecurityCraft v1.7.4.1.jar)
UCHIJAA Trapcraft{v2.2.1a} [Trapcraft] ([1.7.10] Trapcraft - v2.3.0a.zip)
UCHIJAA FLabsBF{4.3} [Better Furnaces] ([1.7.10]Better_Furnaces_V4.3.jar)
UCHIJAA advancedgenetics{1.5.7} [Advanced Genetics] (advancedgenetics-1.7.10-1.5.7.jar)
UCHIJAA Baubles{1.0.1.10} [Baubles] (Baubles-1.7.10-1.0.1.10.jar)
UCHIJAA adventurebackpack{1.7.10-0.8b} [Adventure Backpack] (adventurebackpack-1.7.10-0.8c.jar)
UCHIJAA agamerpaintmod{1.0} [AgameR Paint Mod] (agamerpaintmod-1.7.10-1.0.jar)
UCHIJAA Backpack{2.0.1} [Backpack] (Backpacks-Mod.jar)
UCHIJAA BiblioCraft{1.11.5} [BiblioCraft] (BiblioCraft[v1.11.5][MC1.7.10].jar)
UCHIJAA binocular{1.2} [Binocular] (binocular-1.7.10-1.2.jar)
UCHIJAA Mantle{1.7.10-0.3.2.jenkins184} [Mantle] (Mantle-1.7.10-0.3.2.jar)
UCHIJAA Natura{2.2.0} [Natura] (natura-1.7.10-2.2.0.1.jar)
UCHIJAA BiomesOPlenty{2.1.0} [Biomes O' Plenty] (BiomesOPlenty-1.7.10-2.1.0.1067-universal.jar)
UCHIJAA blocklings{3.0.3} [Blocklings] (Blocklings-3.0.3-1.7.10.jar)
UCHIJAA AWWayofTime{v1.3.3} [Blood Magic: Alchemical Wizardry] (BloodMagic-1.7.10-1.3.3-17.jar)
UCHIJAA bookshelf{1.0.4.187} [Bookshelf] (Bookshelf-1.7.10-1.0.4.187.jar)
UCHIJAA Thaumcraft{4.2.3.5} [Thaumcraft] (Thaumcraft-1.7.10-4.2.3.5.jar)
UCHIJAA Botania{r1.8-249} [Botania] (Botania r1.8-249.jar)
UCHIJAA camolights{[1.7.10] Camo Lights v 3.9} [Camo Lights] (Camo Lights.jar)
UCHIJAA TwilightForest{2.3.7} [The Twilight Forest] (twilightforest-1.7.10-2.3.7.jar)
UCHIJAA chisel{2.9.5.11} [Chisel] (chisel.jar)
UCHIJAA CarpentersBlocks{3.3.8} [Carpenter's Blocks] (Carpenter's Blocks v3.3.8 - MC 1.7.10.jar)
UCHIJAA cfm{3.4.8} [§9MrCrayfish's Furniture Mod] (cfm-3.4.8-mc1.7.10.jar)
UCHIJAA CoFHCore{1.7.10R3.0.1} [CoFH Core] (CoFHCore-[1.7.10]3.0.1-254.jar)
UCHIJAA CraftHeraldry{1.1.3} [CraftHeraldry] (CraftHeraldry 1.1.3.jar)
UCHIJAA darkcore{0.3} [Dark Core] (darkcore-0.3-86.jar)
UCHIJAA ElecCore{1.4.294} [ElecCore] (ElecCore-1.7.10-1.4.294.jar)
UCHIJAA etfuturum{1.5.5} [Et Futurum] (Et Futurum-1.5.5.jar)
UCHIJAA fairylights{1.4.0} [Fairy Lights] (fairylights-1.4.0-1.7.10.jar)
UCHIJAA FoodPlus{3.2rS} [§bFood Plus] (FoodPlus-1.7.2-3.2rS.jar)
UCHIJAA GregsProspecting-II{1.0} [Greg's Prospecting II] (GregsProspectingII-1.7.10-2.0Beta.11.jar)
UCHIJAA grim3212core{V0.2 - 1.7.10} [Grim3212 Core] (Grim3212-Core-1.7.10.jar)
UCHIJAA HardcoreEnderExpansion{1.8.6} [Hardcore Ender Expansion] (HardcoreEnderExpansion MC-1.7.10 v1.8.6.jar)
UCHIJAA InventoryPets{1.4.8.1} [Inventory Pets] (inventorypets-1.7.10-1.4.8.1-universal.jar)
UCHIJAA inventorytweaks{1.59-dev-152-cf6e263} [Inventory Tweaks] (InventoryTweaks-1.59-dev-152.jar)
UCHIJAA IronChest{6.0.62.742} [Iron Chest] (ironchest-1.7.10-6.0.62.742-universal.jar)
UCHIJAA journeymap{5.1.4p1} [JourneyMap] (journeymap-1.7.10-5.1.4p1-unlimited.jar)
UCHIJAA lampposts{V0.1 - 1.7.10} [Lamp Posts] (Lamp Posts-V0.1 - 1.7.10.jar)
UCHIJAA SlimevoidLib{2.0.4.7} [Slimevoid Library] (SlimevoidLibrary-2.0.4.7.jar)
UCHIJAA LittleBlocks{2.2.4.4} [Little Blocks] (LittleBlocks-2.2.4.4.jar)
UCHIJAA magicalcrops{4.0.0_PUBLIC_BETA_4b} [Magical Crops: Core] (magicalcrops-4.0.0_PUBLIC_BETA_5.jar)
UCHIJAA magicalcropsarmour{4.0.0_PUBLIC_BETA_4} [Magical Crops: Armoury] (magicalcropsarmoury-4.0.0_PUBLIC_BETA_4.jar)
UCHIJAA lmt{B-0.1} [Lyra's Magnificent Trinkets] (MagnificentTrinkets Beta 0.1b.jar)
UCHIJAA MineFactoryReloaded{1.7.10R2.8.0} [MineFactory Reloaded] (MineFactoryReloaded-[1.7.10]2.8.0-104.jar)
UCHIJAA MineFactoryReloaded|CompatAppliedEnergistics{1.7.10R2.8.0} [MFR Compat: Applied Energistics] (MineFactoryReloaded-[1.7.10]2.8.0-104.jar)
UCHIJAA MineFactoryReloaded|CompatAtum{1.7.10R2.8.0} [MFR Compat: Atum] (MineFactoryReloaded-[1.7.10]2.8.0-104.jar)
UCHIJAA MineFactoryReloaded|CompatBackTools{1.7.10R2.8.0} [MFR Compat: BackTools] (MineFactoryReloaded-[1.7.10]2.8.0-104.jar)
UCHIJAA MineFactoryReloaded|CompatBuildCraft{1.7.10R2.8.0} [MFR Compat: BuildCraft] (MineFactoryReloaded-[1.7.10]2.8.0-104.jar)
UCHIJAA MineFactoryReloaded|CompatChococraft{1.7.10R2.8.0} [MFR Compat: Chococraft] (MineFactoryReloaded-[1.7.10]2.8.0-104.jar)
UCHIJAA MineFactoryReloaded|CompatExtraBiomes{1.7.10R2.8.0} [MFR Compat: ExtraBiomes] (MineFactoryReloaded-[1.7.10]2.8.0-104.jar)
UCHIJAA MineFactoryReloaded|CompatForestry{1.7.10R2.8.0} [MFR Compat: Forestry] (MineFactoryReloaded-[1.7.10]2.8.0-104.jar)
UCHIJAA MineFactoryReloaded|CompatForgeMicroblock{1.7.10R2.8.0} [MFR Compat: ForgeMicroblock] (MineFactoryReloaded-[1.7.10]2.8.0-104.jar)
UCHIJAA MineFactoryReloaded|CompatIC2{1.7.10R2.8.0} [MFR Compat: IC2] (MineFactoryReloaded-[1.7.10]2.8.0-104.jar)
UCHIJAA MineFactoryReloaded|CompatMystcraft{1.7.10R2.8.0} [MFR Compat: Mystcraft] (MineFactoryReloaded-[1.7.10]2.8.0-104.jar)
UCHIJAA MineFactoryReloaded|CompatProjRed{1.7.10R2.8.0} [MFR Compat ProjectRed] (MineFactoryReloaded-[1.7.10]2.8.0-104.jar)
UCHIJAA MineFactoryReloaded|CompatRailcraft{1.7.10R2.8.0} [MFR Compat: Railcraft] (MineFactoryReloaded-[1.7.10]2.8.0-104.jar)
UCHIJAA MineFactoryReloaded|CompatSufficientBiomes{1.7.10R2.8.0} [MFR Compat: Sufficient Biomes] (MineFactoryReloaded-[1.7.10]2.8.0-104.jar)
UCHIJAA MineFactoryReloaded|CompatThaumcraft{1.7.10R2.8.0} [MFR Compat: Thaumcraft] (MineFactoryReloaded-[1.7.10]2.8.0-104.jar)
UCHIJAA MineFactoryReloaded|CompatThermalExpansion{1.7.10R2.8.0} [MFR Compat: Thermal Expansion] (MineFactoryReloaded-[1.7.10]2.8.0-104.jar)
UCHIJAA MineFactoryReloaded|CompatTConstruct{1.7.10R2.8.0} [MFR Compat: Tinkers' Construct] (MineFactoryReloaded-[1.7.10]2.8.0-104.jar)
UCHIJAA MineFactoryReloaded|CompatTwilightForest{1.7.10R2.8.0} [MFR Compat: TwilightForest] (MineFactoryReloaded-[1.7.10]2.8.0-104.jar)
UCHIJAA MineFactoryReloaded|CompatVanilla{1.7.10R2.8.0} [MFR Compat: Vanilla] (MineFactoryReloaded-[1.7.10]2.8.0-104.jar)
UCHIJAA minepainter{0.2.6} [MinePainter] (minepainter-0.2.6.jar)
UCHIJAA mozombies{2.1.1} [Mo' Zombies] (Mo' Zombies 2.1.1.jar)
UCHIJAA Waila{1.5.10} [Waila] (Waila-1.5.10_1.7.10.jar)
UCHIJAA MoarSigns{1.2.4} [MoarSigns] (MoarSigns-1.7.10-1.2.4.jar)
UCHIJAA MonsterSwarm{1.0.4} [Monster Swarm] (MonsterSwarm-1.0.4.jar)
UCHIJAA MutantCreatures{1.4.9} [Mutant Creatures] (MutantCreatures-1.7.10-1.4.9.jar)
UCHIJAA OneBlockMan{0.2.5} [OneBlockMan] (One Punch Man 0.2.5.1.7.10.zip)
UCHIJAA OpenMods{0.9.1} [OpenMods] (OpenModsLib-1.7.10-0.9.1.jar)
UCHIJAA OpenBlocks{1.5.1} [OpenBlocks] (OpenBlocks-1.7.10-1.5.1.jar)
UCHIJAA OreSpawn{1.7.10.20.3} [OreSpawn] (orespawn-1.7.10-20.3.zip)
UCHIJAA harvestcraft{1.7.10j} [Pam's HarvestCraft] (Pam's HarvestCraft 1.7.10Lb.jar)
UCHIJAA pokeball{V0.1 - 1.7.10} [Pokeball] (Pokeball-V0.1 - 1.7.10.jar)
UCHIJAA Rediscovered{1.3} [Minecraft Rediscovered Mod] (Rediscovered-1.7.10-1.3.jar)
UCHIJAA libsandstone{1.0.0} [libsandstone] (Reliquary-1.7.10-1.2.1.483.jar)
UCHIJAA xreliquary{1.2} [Reliquary] (Reliquary-1.7.10-1.2.1.483.jar)
UCHIJAA secretroomsmod{4.7.1} [The SecretRoomsMod] (secretroomsmod-1.7.10-4.7.1.413.jar)
UCHIJAA StorageDrawers{1.7.10-1.10.1} [Storage Drawers] (StorageDrawers-1.7.10-1.10.1.jar)
UCHIJAA TardisMod{0.994} [Tardis Mod] (tardismod-1.7.10-0.994-124-DS.jar)
UCHIJAA kitchen{1.3.20} [The Kitchen Mod] (TheKitchenMod-1.3.20-1.7.2-10.jar)
UCHIJAA timecontrol{V0.1 - 1.7.10} [Time Control] (Time-Control-Remote-Mod-1.7.10.jar)
UCHIJAA vanityblocks{DefaultProps.LOCALMAJVERSION} [Anarchys Vanity Blocks] (vanityblocks-1.7.10.2.jar)
UCHIJAA witchery{0.24.1} [Witchery] (witchery-1.7.10-0.24.1.jar)
UCHIJAA woodstuff{1.3.2} [WoodStuff] (WoodStuff-1.3.2.jar)
UCHIJAA workbenchupgrades{V0.1 - 1.7.10} [Workbench Upgrades] (Workbench Upgrades-V0.1 - 1.7.10.jar)
UCHIJAA Ztones{1.7.10} [Ztones] (Ztones-1.7.10-2.2.1.jar)
UCHIJAA pacman{1.0.8} [Killer Pacman] (PacmanMod-1.0.8.jar)
GL info: ' Vendor: 'Intel' Version: '4.0.0 - Build 10.18.10.4358' Renderer: 'Intel(R) HD Graphics 4000'
OpenModsLib class transformers: [stencil_patches:FINISHED],[movement_callback:FINISHED],[map_gen_fix:FINISHED],[gl_capabilities_hook:FINISHED],[player_render_hook:FINISHED]
Class transformer null safety: all safe
Mantle Environment: DO NOT REPORT THIS CRASH! Unsupported mods in environment: optifine
CoFHCore: -[1.7.10]3.0.1-254
MineFactoryReloaded: -[1.7.10]2.8.0-104
Chisel: Errors like "[FML]: Unable to lookup ..." are NOT the cause of this crash. You can safely ignore these errors. And update forge while you're at it.
Stencil buffer state: Function set: GL30, pool: forge, bits: 8
Launched Version: 1.7.10-Forge10.13.4.1614-1.7.10
LWJGL: 2.9.1
OpenGL: Intel(R) HD Graphics 4000 GL version 4.0.0 - Build 10.18.10.4358, Intel
GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Anisotropic filtering is supported and maximum anisotropy is 16.
Shaders are available because OpenGL 2.1 is supported.

Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: []
Current Language: Canadian English (Canada)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Anisotropic Filtering: Off (1)