Hello! I am trying to create a modpack to play with my friends, but first I started by modifying existing ones like Tekkit Legends and FTB Ultimate and everything ran with no problem, but the last mod I tried to add to FTB was IC2 (the same version installed in Tekkit Legends). The version in FTB was "Industrial-Craft-2-Mod-Experimental-1.7.10" and the one in Tekkit Legends "IC2.Classic.Version.1.1.3.5". The problem comes in when I try to launch the game and it crashes, the crash report is the following: ---- Minecraft Crash Report ---- // My bad. Time: 09/03/18 11:57 Description: There was a severe problem during mod loading that has caused the game to fail cpw.mods.fml.common.LoaderException: java.lang.NoClassDefFoundError: ic2/core/block/machine/tileentity/TileEntityStandardMachine at cpw.mods.fml.common.LoadController.transition(LoadController.java:163) at cpw.mods.fml.common.Loader.loadMods(Loader.java:544) at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:208) at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:480) at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:878) 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) Caused by: java.lang.NoClassDefFoundError: ic2/core/block/machine/tileentity/TileEntityStandardMachine at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Unknown Source) at cpw.mods.fml.common.ProxyInjector.inject(ProxyInjector.java:59) at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:512) at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74) at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) at com.google.common.eventbus.EventBus.post(EventBus.java:275) at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:212) at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:190) 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.EventSubscriber.handleEvent(EventSubscriber.java:74) at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47) at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322) at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304) at com.google.common.eventbus.EventBus.post(EventBus.java:275) at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:119) at cpw.mods.fml.common.Loader.loadMods(Loader.java:513) ... 10 more Caused by: java.lang.ClassNotFoundException: ic2.core.block.machine.tileentity.TileEntityStandardMachine at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) ... 35 more Caused by: java.lang.NoClassDefFoundError: ic2/core/upgrade/IUpgradableBlock 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) ... 37 more Caused by: java.lang.ClassNotFoundException: ic2.core.upgrade.IUpgradableBlock at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:101) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) ... 41 more 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_111, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 4866054000 bytes (4640 MB) / 5368709120 bytes (5120 MB) up to 5368709120 bytes (5120 MB) JVM Flags: 5 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xms5120m -Xmx5120m -XX:+UseG1GC -XX:MaxGCPauseMillis=4 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 10.13.4.1614 Optifine OptiFine_1.7.10_HD_U_D4 141 mods loaded, 135 mods active States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored UC mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) UC FML{7.10.99.99} [Forge Mod Loader] (modpack.jar) UC Forge{10.13.4.1614} [Minecraft Forge] (modpack.jar) UC appliedenergistics2-core{rv2-stable-10} [AppliedEnergistics2 Core] (minecraft.jar) UC CodeChickenCore{1.0.7.47} [CodeChicken Core] (minecraft.jar) UC ImmibisMicroblocks{59.1.2} [Immibis's Microblocks] (immibis-microblocks-59.1.2.jar) UC NotEnoughItems{1.0.5.120} [Not Enough Items] (NotEnoughItems-1.7.10-1.0.5.120-universal.jar) UC OpenModsCore{0.9.1} [OpenModsCore] (minecraft.jar) UC {000} [CoFH ASM] (minecraft.jar) UC mod_ThreadedLighting{1.7.10-1.0} [Threaded Lighting] (minecraft.jar) UC gilded-games-util{1.7.10-1.2} [Gilded Games Utility] (Gilded-Games-Util-1.7.10.jar) UC bspkrsCore{6.15} [bspkrsCore] ([1.7.10]bspkrsCore-universal-6.15.jar) UC Treecapitator{1.7.10} [Treecapitator] ([1.7.10]Treecapitator-universal-2.0.4.jar) UC CoFHCore{1.7.10R3.1.4} [CoFH Core] (CoFHCore-[1.7.10]3.1.4-329.jar) UC BuildCraft|Core{7.1.16} [BuildCraft] (buildcraft-7.1.16.jar) UC BuildCraft|Transport{7.1.16} [BC Transport] (buildcraft-7.1.16.jar) UC BuildCraft|Silicon{7.1.16} [BC Silicon] (buildcraft-7.1.16.jar) UC BuildCraft|Factory{7.1.16} [BC Factory] (buildcraft-7.1.16.jar) UC ComputerCraft{1.74} [ComputerCraft] (ComputerCraftPlusComputerCraftEdu1.74.jar) UC factorization.notify{1.0} [Factorization Notification System] (Factorization-1.7.10-0.8.108.jar) UC factorization.dimensionalSlice{0.8.108} [Factorization Dimensional Slices] (Factorization-1.7.10-0.8.108.jar) UC factorization{0.8.108} [Factorization] (Factorization-1.7.10-0.8.108.jar) UC ExtrabiomesXL{3.16.4} [ExtrabiomesXL] (extrabiomesxl_1.7.10-3.16.4.jar) UC IC2{2.2.999} [IndustrialCraft 2 Classic] (IC2.Classic.Version.1.1.3.5.jar) UC Forestry{3.6.11.2} [Forestry for Minecraft] (forestry_1.7.10-3.6.11.2.jar) UC Baubles{1.0.1.10} [Baubles] (Baubles-1.7.10-1.0.1.10.jar) UC Thaumcraft{4.2.3.5} [Thaumcraft] (Thaumcraft-1.7.10-4.2.3.5.jar) UC ThermalFoundation{1.7.10R1.2.6} [Thermal Foundation] (ThermalFoundation-[1.7.10]1.2.6-118.jar) UC ThermalExpansion{1.7.10R4.1.5} [Thermal Expansion] (ThermalExpansion-[1.7.10]4.1.5-248.jar) UC LogisticsPipes{0.9.3.70} [Logistics Pipes] (logisticspipes-0.9.3.70.jar) UC additionalpipes{4.7.0} [Additional Pipes] (additionalpipes-4.7.0.jar) UC AdvancedSolarPanel{1.7.10-3.5.1} [Advanced Solar Panels] (Advanced-Solar-Panels-Addon-1.7.10.jar) UE AdvancedMachines{1.1.6} [IC2 Advanced Machines Addon] (AdvancedMachinesAS-1.7.10.jar) UC aether{1.7.10-1.6} [Aether II] (Aether-2-1.7.10.jar) UC appliedenergistics2{rv2-stable-10} [Applied Energistics 2] (appliedenergistics2-rv2-stable-10.jar) UC BigReactors{0.4.3A} [Big Reactors] (BigReactors-0.4.3A.jar) UC qmunitylib{1.0} [QmunityLib] (QmunityLib-1.7.10-0.1.114-universal.jar) UC bluepower{0.2.962} [Blue Power] (BluePower-1.7.10-0.2.962-universal.jar) UC BuildCraft|Builders{7.1.16} [BC Builders] (buildcraft-7.1.16.jar) UC BuildCraft|Energy{7.1.16} [BC Energy] (buildcraft-7.1.16.jar) UC BuildCraft|Robotics{7.1.16} [BC Robotics] (buildcraft-7.1.16.jar) UC BuildCraft|Compat{7.1.3} [BuildCraft Compat] (buildcraft-compat-7.1.3.jar) UC CarpentersBlocks{3.3.7} [Carpenter's Blocks] (Carpenter's Blocks v3.3.7 - MC 1.7.10.jar) UC ChickenChunks{1.3.4.19} [ChickenChunks] (ChickenChunks-1.7.10-1.3.4.19-universal.jar) UC EE3{0.3.0.547} [Equivalent Exchange 3] (EquivalentExchange3-1.7.10-0.3.0.547.jar) UC Railcraft{9.10.0.0} [Railcraft] (Railcraft_1.7.10-9.10.0.0.jar) UC TwilightForest{2.3.7} [The Twilight Forest] (Twilight-Forest-Mod-1.7.10.jar) UC ForgeMultipart{1.2.0.345} [Forge Multipart] (ForgeMultipart-1.7.10-1.2.0.345-universal.jar) UC chisel{2.9.3.9} [Chisel] (Chisel-2.9.3.9.jar) UC ChiselFacades{1.7.10-2.12-chiselteam} [Chisel Facades] (ChiselFacades-1.7.10-2.12-chiselteam.jar) UC ComputerCraftEdu{1.74} [ComputerCraftEdu] (ComputerCraftPlusComputerCraftEdu1.74.jar) UC CustomSpawner{3.3.0} [DrZhark's CustomSpawner] (Custom-Mob-Spawner-Mod-1.7.10) UC defaultkeys{1.0.24} [Default Keyconfig] (defaultkeys-mc1.7.10-1.0.24.jar) UC MoCreatures{6.3.1} [DrZhark's Mo'Creatures Mod] (DrZharks MoCreatures Mod v6.3.1.zip) UC MineFactoryReloaded{1.7.10R2.8.1} [MineFactory Reloaded] (MineFactoryReloaded-[1.7.10]2.8.1-174.jar) UC EnderIO{1.7.10-2.2.8.381} [Ender IO] (EnderIO-1.7.10-2.2.8.381.jar) UC EnderStorage{1.4.7.37} [EnderStorage] (EnderStorage-1.7.10-1.4.7.37-universal.jar) UC eng_toolbox{1.2.3.0} [Engineer's Toolbox] (EngineersToolbox-1.2.3.0-BETA.jar) UC ExtraUtilities{1.2.12} [Extra Utilities] (Extra-Utilities-Mod-1.7.10.jar) UC factorization.misc{0.8.108} [Factorization Miscellaneous Nonsense] (Factorization-1.7.10-0.8.108.jar) UC fz.scrap{0.8.108} [Scrap] (Factorization-1.7.10-0.8.108.jar) UC factorization.truth{0.8.108} [Truth] (Factorization-1.7.10-0.8.108.jar) UC flansmod{4.10.0} [Flan's Mod] (Flans-Mod-1.7.10.jar) UC FoodPlus{3.0rS} [Food Plus] (Food-Plus-Mod-1.7.10.jar) UC GraviSuite{1.7.10-2.0.3} [Graviation Suite] (GraviSuite-1.7.10-2.0.3.jar) UC iChunUtil{4.2.3} [iChunUtil] (iChun-Util-Mod-1.7.10.jar) UC GraviGun{4.0.0-beta} [GraviGun] (Gravity-Gun-Mod-1.7.10.jar) UC Hats{4.0.1} [Hats] (Hats-Mod-1.7.10.jar) UC IC2-Classic-Spmod{0.0.0.0} [IC2 Classic Detection Helper] (IC2.Classic.Version.1.1.3.5.jar) UC ImmersiveEngineering{0.7.7} [Immersive Engineering] (ImmersiveEngineering-0.7.7.jar) UC ImmibisCore{59.1.4} [Immibis Core] (immibis-core-59.1.4.jar) UC ImmibisPeripherals{59.0.2} [Immibis's Peripherals] (immibis-peripherals-59.0.2.jar) UC inventorytweaks{1.59-dev-156-af3bc68} [Inventory Tweaks] (InventoryTweaks-1.59-dev-156.jar) UC IronChest{6.0.62.742} [Iron Chest] (ironchest-1.7.10-6.0.62.742-universal.jar) UC MineFactoryReloaded|CompatAppliedEnergistics{1.7.10R2.8.1} [MFR Compat: Applied Energistics] (MineFactoryReloaded-[1.7.10]2.8.1-174.jar) UC MineFactoryReloaded|CompatBuildCraft{1.7.10R2.8.1} [MFR Compat: BuildCraft] (MineFactoryReloaded-[1.7.10]2.8.1-174.jar) UC MineFactoryReloaded|CompatExtraBiomes{1.7.10R2.8.1} [MFR Compat: ExtraBiomes] (MineFactoryReloaded-[1.7.10]2.8.1-174.jar) UC MineFactoryReloaded|CompatForestry{1.7.10R2.8.1} [MFR Compat: Forestry] (MineFactoryReloaded-[1.7.10]2.8.1-174.jar) UC MineFactoryReloaded|CompatForgeMicroblock{1.7.10R2.8.1} [MFR Compat: ForgeMicroblock] (MineFactoryReloaded-[1.7.10]2.8.1-174.jar) UC MineFactoryReloaded|CompatIC2{1.7.10R2.8.1} [MFR Compat: IC2] (MineFactoryReloaded-[1.7.10]2.8.1-174.jar) UC MineFactoryReloaded|CompatRailcraft{1.7.10R2.8.1} [MFR Compat: Railcraft] (MineFactoryReloaded-[1.7.10]2.8.1-174.jar) UC MineFactoryReloaded|CompatThaumcraft{1.7.10R2.8.1} [MFR Compat: Thaumcraft] (MineFactoryReloaded-[1.7.10]2.8.1-174.jar) UC MineFactoryReloaded|CompatThermalExpansion{1.7.10R2.8.1} [MFR Compat: Thermal Expansion] (MineFactoryReloaded-[1.7.10]2.8.1-174.jar) UC MineFactoryReloaded|CompatTwilightForest{1.7.10R2.8.1} [MFR Compat: TwilightForest] (MineFactoryReloaded-[1.7.10]2.8.1-174.jar) UC MineFactoryReloaded|CompatVanilla{1.7.10R2.8.1} [MFR Compat: Vanilla] (MineFactoryReloaded-[1.7.10]2.8.1-174.jar) UC MoarPeripherals{1.7.10-1.7-1.53} [MoarPeripherals] (MoarPeripherals-1.7.10-1.7-1.53.jar) UC ModularForcefieldSystem{3.0-ALPHA-7} [Modular Forcefield System] (ModularForcefieldSystem-1.7.10-3.0-ALPHA-7.jar) UC numina{0.4.1.104} [Numina] (Numina-0.4.1.104.jar) UC MrTJPCoreMod{1.1.0.27} [MrTJPCore] (MrTJPCore-1.7.10-1.1.0.27-universal.jar) UC ProjRed|Core{4.7.0pre5.89} [ProjectRed Core] (ProjectRed-Base-1.7.10.jar) UC powersuits{1.7.10-0.11.1.114} [MachineMuse's Modular Powersuits] (ModularPowersuits-1.7.10-0.11.1.114.jar) UC morechisels{@VERSION@} [More Chisels] (MoreChisels-1.7.10-1.0-28.jar) UC cfm{3.4.7} [§9MrCrayfish's Furniture Mod] (MrCrayfishs-Furniture-Mod-1.7.10.jar) UC Mystcraft{0.12.3.03} [Mystcraft] (mystcraft-1.7.10-0.12.3.03.jar) UC NEIAddons{1.12.11.36} [NEI Addons] (neiaddons-1.12.11.36-mc1.7.10.jar) UC NEIAddons|Developer{1.12.11.36} [NEI Addons: Developer Tools] (neiaddons-1.12.11.36-mc1.7.10.jar) UC NEIAddons|AppEng{1.12.11.36} [NEI Addons: Applied Energistics 2] (neiaddons-1.12.11.36-mc1.7.10.jar) UC NEIAddons|Botany{1.12.11.36} [NEI Addons: Botany] (neiaddons-1.12.11.36-mc1.7.10.jar) UC NEIAddons|Forestry{1.12.11.36} [NEI Addons: Forestry] (neiaddons-1.12.11.36-mc1.7.10.jar) UC NEIAddons|CraftingTables{1.12.11.36} [NEI Addons: Crafting Tables] (neiaddons-1.12.11.36-mc1.7.10.jar) UC NEIAddons|ExNihilo{1.12.11.36} [NEI Addons: Ex Nihilo] (neiaddons-1.12.11.36-mc1.7.10.jar) UC neiintegration{1.0.12} [NEI Integration] (NEIIntegration-MC1.7.10-1.0.12.jar) UC NetherOres{1.7.10R2.3.2B1} [Nether Ores] (NetherOres-[1.7.10]2.3.2B1-25.jar) UC ObsidiPlates{3.0.0.18} [ObsidiPlates] (ObsidiPlates-1.7.10-universal-3.0.0.18.jar) UC OCS{1.7.5} [OpenCCSensors] (openccsensors-1.7.5.jar) UC OpenMods{0.9.1} [OpenMods] (OpenModsLib-1.7.10-0.9.1.jar) UC OpenPeripheralCore{1.3} [OpenPeripheralCore] (OpenPeripheral-1.7.10-AIO-7.jar) UC OpenPeripheral{0.5.1} [OpenPeripheralAddons] (OpenPeripheral-1.7.10-AIO-7.jar) UC OpenPeripheralIntegration{0.5} [OpenPeripheralIntegration] (OpenPeripheral-1.7.10-AIO-7.jar) UC PneumaticCraft{1.12.7-150} [PneumaticCraft] (PneumaticCraft-1.7.10-1.12.7-150-universal.jar) UC PortalGun{4.0.0-beta-6} [PortalGun] (Portal-Gun-Mod-1.7.10.jar) UC PowerConverters3{1.7.10-2.11} [Power Converters 3] (PowerConverters-1.7.10-2.11.jar) UC ProjectE{1.7.10-PE1.9.3} [ProjectE] (ProjectE-1.7.10-PE1.9.3h.jar) UC ProjRed|Transmission{4.7.0pre5.89} [ProjectRed Transmission] (ProjectRed-1.7.10-Integration.jar) UC ProjRed|Compatibility{4.7.0pre5.89} [ProjectRed Compatibility] (ProjectRed-1.7.10-Compat.jar) UC ProjRed|Integration{4.7.0pre5.89} [ProjectRed Integration] (ProjectRed-1.7.10-Integration.jar) UC ProjRed|Fabrication{4.7.0pre5.89} [ProjectRed Fabrication] (ProjectRed-1.7.10-Fabrication.jar) UC ProjRed|Illumination{4.7.0pre5.89} [ProjectRed Illumination] (ProjectRed-1.7.10-Lighting.jar) UC RedstoneArsenal{1.7.10R1.1.1} [Redstone Arsenal] (RedstoneArsenal-[1.7.10]1.1.1-89.jar) UC ReiMinimap{1.7.10} [Rei's Minimap] (Reis-Minimap-Mod-1.7.10.jar) UC secretroomsmod{@VERSION@} [The SecretRoomsMod] (Secret-Rooms-Mod-1.7.10.jar) UC smoothbedrock{2.2.0.9} [SmoothBedrock] (SmoothBedrock-1.7.10-2.2.0.9.jar) UC SSR{Alpha 0.9a} [Soul Shards: Reborn] (Soul-Shards-Reborn-Mod-1.7.10.jar) UC StevesCarts{2.0.0.b18} [Steve's Carts 2] (StevesCarts2.0.0.b18.jar) UC Tubestuff{59.0.3} [Tubestuff] (tubestuff-59.0.3.jar) UC Waila{1.5.10} [Waila] (Waila-1.5.10_1.7.10.jar) UC WailaHarvestability{1.1.2} [Waila Harvestability] (WailaHarvestability-mc1.7.x-1.1.2.jar) UC worldedit{6.0-beta-01} [WorldEdit] (worldedit-forge-mc1.7.10-6.0-beta-01.jar) UC WR-CBE|Core{1.4.1.7} [WR-CBE Core] (WR-CBE-1.7.10-1.4.1.7-universal.jar) UC WR-CBE|Addons{1.4.1.7} [WR-CBE Addons] (WR-CBE-1.7.10-1.4.1.7-universal.jar) UC WR-CBE|Logic{1.4.1.7} [WR-CBE Logic] (WR-CBE-1.7.10-1.4.1.7-universal.jar) UC zettaindustries{1.1} [Zetta Industries] (zettaindustries-1.1-105.jar) UC McMultipart{1.2.0.345} [Minecraft Multipart Plugin] (ForgeMultipart-1.7.10-1.2.0.345-universal.jar) UC aobd{2.8.4} [Another One Bites The Dust] (AOBD-2.8.4.jar) UC ForgeMicroblock{1.2.0.345} [Forge Microblocks] (ForgeMultipart-1.7.10-1.2.0.345-universal.jar) UD MineFactoryReloaded|CompatAtum{1.7.10R2.8.1} [MFR Compat: Atum] (MineFactoryReloaded-[1.7.10]2.8.1-174.jar) UD MineFactoryReloaded|CompatBackTools{1.7.10R2.8.1} [MFR Compat: BackTools] (MineFactoryReloaded-[1.7.10]2.8.1-174.jar) UD MineFactoryReloaded|CompatChococraft{1.7.10R2.8.1} [MFR Compat: Chococraft] (MineFactoryReloaded-[1.7.10]2.8.1-174.jar) UD MineFactoryReloaded|CompatProjRed{1.7.10R2.8.1} [MFR Compat ProjectRed] (MineFactoryReloaded-[1.7.10]2.8.1-174.jar) UD MineFactoryReloaded|CompatSufficientBiomes{1.7.10R2.8.1} [MFR Compat: Sufficient Biomes] (MineFactoryReloaded-[1.7.10]2.8.1-174.jar) UD MineFactoryReloaded|CompatTConstruct{1.7.10R2.8.1} [MFR Compat: Tinkers' Construct] (MineFactoryReloaded-[1.7.10]2.8.1-174.jar) OpenModsLib class transformers: [stencil_patches:FINISHED],[movement_callback:FINISHED],[map_gen_fix:ENABLED],[gl_capabilities_hook:FINISHED],[player_render_hook:FINISHED] Class transformer null safety: all safe CoFHCore: -[1.7.10]3.1.4-329 ThermalFoundation: -[1.7.10]1.2.6-118 ThermalExpansion: -[1.7.10]4.1.5-248 AE2 Version: stable rv2-stable-10 for Forge 10.13.2.1291 MineFactoryReloaded: -[1.7.10]2.8.1-174 NetherOres: -[1.7.10]2.3.2B1-25 RedstoneArsenal: -[1.7.10]1.1.1-89 OptiFine Version: OptiFine_1.7.10_HD_U_D4 Render Distance Chunks: 12 Mipmaps: 4 Anisotropic Filtering: 1 Antialiasing: 0 Multitexture: false OpenGlVersion: 4.6.0 NVIDIA 390.77 OpenGlRenderer: GeForce GTX 950/PCIe/SSE2 OpenGlVendor: NVIDIA Corporation CpuCount: 4 It says the error comes from "ic2/core/block/machine/tileentity/TileEntityStandardMachine" which I saw is missing frome the IC2 classic files, I even tried copying it from the IC2 Experimental files and didn't work. So I wanted to know if there's a way to solve my problem? Thanks!