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Ive been wanting to create a modpack of my own; im using alot of mods -- about 70 including about 10-15 complementary core mods -- however no matter what I do it keeps showing the message "it looks like you're using an unsupported modified version of this game" and its preventing me from doing anything....PLEASE help me whoever is proficient in this type of stuff

Heres the crash report:

---- Minecraft Crash Report -------- Minecraft Crash Report ----// But it works on my machine.
Time: 12/2/18 2:40 PMDescription: There was a severe problem during mod loading that has caused the game to fail
cpw.mods.fml.common.LoaderException: java.lang.NoClassDefFoundError: cpw/mods/fml/common/IScheduledTickHandler 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(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) at net.minecraft.launchwrapper.Launch.main(Launch.java:28)Caused by: java.lang.NoClassDefFoundError: cpw/mods/fml/common/IScheduledTickHandler at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:348) at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:440) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) 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(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) 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 moreCaused by: java.lang.ClassNotFoundException: cpw.mods.fml.common.IScheduledTickHandler at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 35 moreCaused by: java.lang.NullPointerException at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182) ... 37 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_51, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 403788504 bytes (385 MB) / 973078528 bytes (928 MB) up to 2147483648 bytes (2048 MB) JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M 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_E7 115 mods loaded, 105 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] (forge-1.7.10-10.13.4.1614-1.7.10.jar) UC Forge{10.13.4.1614} [Minecraft Forge] (forge-1.7.10-10.13.4.1614-1.7.10.jar) UC AM2-Preloader{0.0.3} [AMCore] (minecraft.jar) UC CodeChickenCore{1.0.7.47} [CodeChicken Core] (minecraft.jar) UC Micdoodlecore{} [Micdoodle8 Core] (minecraft.jar) UC NotEnoughItems{1.0.5.120} [Not Enough Items] (NotEnoughItems-1.7.10-1.0.5.120-universal.jar) UC OpenModsCore{0.10} [OpenModsCore] (minecraft.jar) UC <CoFH ASM>{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-1.7.10-1.9.jar) UE DamageIndicatorsMod{2.7.0.1} [Damage Indicators] (1.5.2_DamageIndicators_v2.7.0.1.zip) UC AnimationAPI{1.2.4} [AnimationAPI] (AnimationAPI-1.7.10-1.2.4.jar) UC arsmagica2{1.4.0.009} [Ars Magica 2] (1.7.10_AM2-1.4.0.009.jar) UC securitycraft{v1.8.10} [SecurityCraft] ([1.7.10]+SecurityCraft+v1.8.10.jar) UC bspkrsCore{6.16} [bspkrsCore] ([1.7.10]bspkrsCore-universal-6.16.jar) UC Treecapitator{1.7.10} [Treecapitator] ([1.7.10]Treecapitator-universal-2.0.4.jar) UC Baubles{1.0.1.10} [Baubles] (Baubles-1.7.10-1.0.1.10.jar) UC adventurebackpack{1.7.10-0.8b} [Adventure Backpack] (adventurebackpack-1.7.10-0.8c.jar) UC aether{1.7.10-1.6} [Aether II] (aether-1.7.10-1.6.jar) UC CoFHCore{1.7.10R3.1.4} [CoFH Core] (CoFHCore-[1.7.10]3.1.4-329.jar) UC BuildCraft|Core{7.1.23} [BuildCraft] (buildcraft-7.1.23.jar) UC MineFactoryReloaded{1.7.10R2.8.2B1} [MineFactory Reloaded] (MineFactoryReloaded-[1.7.10]2.8.2B1-201.jar) UC Thaumcraft{4.2.3.5} [Thaumcraft] (Thaumcraft-1.7.10-4.2.3.5.jar) UC Artifice{1.7.10R1.1.4} [Artifice] (Artifice-1.7.10-1.1.5R-399.jar) UC BattleTowers{1.5.1} [Battle Towers] (BattleTowers-1.7.10.jar) UC betterbuilderswands{0.8.1} [Better Builder's Wands] (BetterBuildersWands-0.8.1-1.7.10r92+aec06c3.jar) UC BiblioCraft{1.11.7} [BiblioCraft] (BiblioCraft[v1.11.7][MC1.7.10].jar) UC Mantle{1.7.10-0.3.2.jenkins191} [Mantle] (Mantle-1.7.10-0.3.2b.jar) UC Natura{2.2.0} [Natura] (natura-1.7.10-2.2.1a2.jar) UC BiomesOPlenty{2.1.0} [Biomes O' Plenty] (BiomesOPlenty-1.7.10-2.1.0.2308-universal.jar) UC AWWayofTime{v1.3.3} [Blood Magic: Alchemical Wizardry] (BloodMagic-1.7.10-1.3.3-17.jar) UC Botania{r1.8-249} [Botania] (Botania+r1.8-249.jar) UC BrandonsCore{1.0.0.12} [Brandon's Core] (BrandonsCore-1.0.0.12.jar) UC BuildCraft|Transport{7.1.23} [BC Transport] (buildcraft-7.1.23.jar) UC BuildCraft|Factory{7.1.23} [BC Factory] (buildcraft-7.1.23.jar) UC BuildCraft|Silicon{7.1.23} [BC Silicon] (buildcraft-7.1.23.jar) UC BuildCraft|Robotics{7.1.23} [BC Robotics] (buildcraft-7.1.23.jar) UC BuildCraft|Energy{7.1.23} [BC Energy] (buildcraft-7.1.23.jar) UC BuildCraft|Builders{7.1.23} [BC Builders] (buildcraft-7.1.23.jar) UC TwilightForest{2.3.7} [The Twilight Forest] (twilightforest-1.7.10-2.3.7.jar) UC chisel{2.9.5.11} [Chisel] (Chisel-2.9.5.11.jar) UC CarpentersBlocks{3.3.8.1} [Carpenter's Blocks] (Carpenter's+Blocks+v3.3.8.1+-+MC+1.7.10.jar) UC chocolateQuest{1.0} [Chocolate Quest] (chocolateQuest-1.7.10-1.0.jar) UC CustomSpawner{3.3.0} [DrZhark's CustomSpawner] (CustomMobSpawner+3.3.0.zip) UC customnpcs{1.7.10d} [CustomNpcs] (CustomNPCs_1.7.10d(29oct17).jar) UC PTRModelLib{1.0.0} [PTRModelLib] (Decocraft-2.4.2_1.7.10.jar) UC props{2.4.2} [Decocraft] (Decocraft-2.4.2_1.7.10.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 DraconicEvolution{1.0.2h} [Draconic Evolution] (Draconic-Evolution-1.7.10-1.0.2h.jar) UC MoCreatures{6.3.1} [DrZhark's Mo'Creatures Mod] (DrZharks+MoCreatures+Mod+v6.3.1.zip) UC eplus{3.0.2-d} [Enchanting Plus] (EnchantingPlus-1.7.10-3.0.2-d.jar) UC enhancedportals{3.0.12} [EnhancedPortals] (EnhancedPortals_1.7.10-universal-3.0.12.jar) UC ExtraUtilities{1.2.12} [Extra Utilities] (extrautilities-1.2.12.jar) UC ForbiddenMagic{1.7.10-0.575} [Forbidden Magic] (Forbidden+Magic-1.7.10-0.575.jar) UC Waila{1.5.10} [Waila] (Waila-1.5.10_1.7.10.jar) UC TConstruct{1.7.10-1.8.8.build988} [Tinkers' Construct] (TConstruct-1.7.10-1.8.8.jar) UC GalacticraftCore{3.0.12} [Galacticraft Core] (GalacticraftCore-1.7-3.0.12.504.jar) UC GalacticraftMars{3.0.12} [Galacticraft Planets] (Galacticraft-Planets-1.7-3.0.12.504.jar) UC GardenContainers{1.7.10-1.7.0} [Garden Containers] (GardenStuff-1.7.10-1.7.0.jar) UC GardenCore{1.7.10-1.7.0} [Garden Core] (GardenStuff-1.7.10-1.7.0.jar) UC GardenStuff{1.7.10-1.7.0} [Garden Stuff] (GardenStuff-1.7.10-1.7.0.jar) UC GardenTrees{1.7.10-1.7.0} [Garden Trees] (GardenStuff-1.7.10-1.7.0.jar) UC iChunUtil{4.2.3} [iChunUtil] (iChunUtil-4.2.3.jar) UC GraviGun{4.0.0-beta} [GraviGun] (GravityGun-4.0.0-beta.jar) UC Hats{4.0.1} [Hats] (Hats-4.0.1.jar) UC InventoryPets{1.5.2} [Inventory Pets] (inventorypets-1.7.10-1.5.2-universal.jar) UC inventorytweaks{1.59-dev-152-cf6e263} [Inventory Tweaks] (InventoryTweaks-1.59-dev-152.jar) UC IronChest{6.0.62.742} [Iron Chest] (ironchest-1.7.10-6.0.62.742-universal.jar) UC journeymap{5.1.4p2} [JourneyMap] (journeymap-1.7.10-5.1.4p2-unlimited.jar) UC malisiscore{1.7.10-0.14.3} [MalisisCore] (malisiscore-1.7.10-0.14.3.jar) UC malisisdoors{1.7.10-1.13.2} [Malisis' Doors] (malisisdoors-1.7.10-1.13.2.jar) UC meteors{2.14.3} [Falling Meteors] (meteors-1.7.10-2.14.3.jar) UC MineFactoryReloaded|CompatBuildCraft{1.7.10R2.8.2B1} [MFR Compat: BuildCraft] (MineFactoryReloaded-[1.7.10]2.8.2B1-201.jar) UC MineFactoryReloaded|CompatForgeMicroblock{1.7.10R2.8.2B1} [MFR Compat: ForgeMicroblock] (MineFactoryReloaded-[1.7.10]2.8.2B1-201.jar) UC MineFactoryReloaded|CompatThaumcraft{1.7.10R2.8.2B1} [MFR Compat: Thaumcraft] (MineFactoryReloaded-[1.7.10]2.8.2B1-201.jar) UC MineFactoryReloaded|CompatThermalExpansion{1.7.10R2.8.2B1} [MFR Compat: Thermal Expansion] (MineFactoryReloaded-[1.7.10]2.8.2B1-201.jar) UC MineFactoryReloaded|CompatTConstruct{1.7.10R2.8.2B1} [MFR Compat: Tinkers' Construct] (MineFactoryReloaded-[1.7.10]2.8.2B1-201.jar) UC MineFactoryReloaded|CompatTwilightForest{1.7.10R2.8.2B1} [MFR Compat: TwilightForest] (MineFactoryReloaded-[1.7.10]2.8.2B1-201.jar) UC MineFactoryReloaded|CompatVanilla{1.7.10R2.8.2B1} [MFR Compat: Vanilla] (MineFactoryReloaded-[1.7.10]2.8.2B1-201.jar) UC Morph{0.9.3} [Morph] (Morph-Beta-0.9.3.jar) UC cfm{3.4.7} [§9MrCrayfish's Furniture Mod] (MrCrayfishFurnitureModv3.4.7(1.7.10).jar) UC NEIAddons{1.12.15.41} [NEI Addons] (neiaddons-1.12.15.41-mc1.7.10.jar) UC NEIAddons|Developer{1.12.15.41} [NEI Addons: Developer Tools] (neiaddons-1.12.15.41-mc1.7.10.jar) UC NEIAddons|AppEng{1.12.15.41} [NEI Addons: Applied Energistics 2] (neiaddons-1.12.15.41-mc1.7.10.jar) UC NEIAddons|Botany{1.12.15.41} [NEI Addons: Botany] (neiaddons-1.12.15.41-mc1.7.10.jar) UC NEIAddons|Forestry{1.12.15.41} [NEI Addons: Forestry] (neiaddons-1.12.15.41-mc1.7.10.jar) UC NEIAddons|CraftingTables{1.12.15.41} [NEI Addons: Crafting Tables] (neiaddons-1.12.15.41-mc1.7.10.jar) UC NEIAddons|ExNihilo{1.12.15.41} [NEI Addons: Ex Nihilo] (neiaddons-1.12.15.41-mc1.7.10.jar) UC netherportalfix{1.0} [Nether Portal Fix] (netherportalfix-mc1.7.10-1.1.0.jar) UC OpenMods{0.10} [OpenMods] (OpenModsLib-1.7.10-0.10.jar) UC OpenBlocks{1.6} [OpenBlocks] (OpenBlocks-1.7.10-1.6.jar) UC origin{8.0.3} [Origin] (Origin-1.7.10-8.0.3.jar) UC addonscrewdriver{1.0.0} [OriginAddonScrewdriver] (Origin-1.7.10-8.0.3.jar) UC harvestcraft{1.7.10j} [Pam's HarvestCraft] (Pam's+HarvestCraft+1.7.10Lb.jar) UC PortalGun{4.0.0-beta-6} [PortalGun] (PortalGun-4.0.0-beta-6.jar) UC libsandstone{1.0.0} [libsandstone] (Reliquary-1.7.10-1.2.1.483.jar) UC xreliquary{1.2} [Reliquary] (Reliquary-1.7.10-1.2.1.483.jar) UC secretroomsmod{4.7.1} [The SecretRoomsMod] (secretroomsmod-1.7.10-4.7.1.413.jar) UC SSTOW{1.7.10-0.1-RC9-7} [Soul Shards: The Old Ways] (SoulShards-TOW-1.7.10-0.1-RC9-7.jar) UC ultimate_unicorn_mod{1.5.16} [Wings, Horns, and Hooves, the Ultimate Unicorn Mod!] (ultimate_unicorn_mod-1.7.10-1.5.16.jar) UC WailaHarvestability{1.1.6} [Waila Harvestability] (WailaHarvestability-mc1.7.10-1.1.6.jar) UC weepingangels{4.0.2} [Weeping Angels] (WeepingAngels-1.7.10-4.0.2.jar) UC witchery{0.24.1} [Witchery] (witchery-1.7.10-0.24.1.jar) UD MineFactoryReloaded|CompatAppliedEnergistics{1.7.10R2.8.2B1} [MFR Compat: Applied Energistics] (MineFactoryReloaded-[1.7.10]2.8.2B1-201.jar) UD MineFactoryReloaded|CompatAtum{1.7.10R2.8.2B1} [MFR Compat: Atum] (MineFactoryReloaded-[1.7.10]2.8.2B1-201.jar) UD MineFactoryReloaded|CompatBackTools{1.7.10R2.8.2B1} [MFR Compat: BackTools] (MineFactoryReloaded-[1.7.10]2.8.2B1-201.jar) UD MineFactoryReloaded|CompatChococraft{1.7.10R2.8.2B1} [MFR Compat: Chococraft] (MineFactoryReloaded-[1.7.10]2.8.2B1-201.jar) UD MineFactoryReloaded|CompatExtra
Biomes{1.7.10R2.8.2B1} [MFR Compat: ExtraBiomes] (MineFactoryReloaded-[1.7.10]2.8.2B1-201.jar) UD MineFactoryReloaded|CompatForestry{1.7.10R2.8.2B1} [MFR Compat: Forestry] (MineFactoryReloaded-[1.7.10]2.8.2B1-201.jar) UD MineFactoryReloaded|CompatIC2{1.7.10R2.8.2B1} [MFR Compat: IC2] (MineFactoryReloaded-[1.7.10]2.8.2B1-201.jar) UD MineFactoryReloaded|CompatProjRed{1.7.10R2.8.2B1} [MFR Compat ProjectRed] (MineFactoryReloaded-[1.7.10]2.8.2B1-201.jar) UD MineFactoryReloaded|CompatRailcraft{1.7.10R2.8.2B1} [MFR Compat: Railcraft] (MineFactoryReloaded-[1.7.10]2.8.2B1-201.jar) UD MineFactoryReloaded|CompatSufficientBiomes{1.7.10R2.8.2B1} [MFR Compat: Sufficient Biomes] (MineFactoryReloaded-[1.7.10]2.8.2B1-201.jar) GL info: ' Vendor: 'ATI Technologies Inc.' Version: '4.5.13537 Compatibility Profile Context 24.20.13001.1010' Renderer: 'Radeon RX 580 Series' OpenModsLib class transformers: [stencil_patches:FINISHED],[movement_callback:FINISHED],[player_damage_hook: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 MineFactoryReloaded: -[1.7.10]2.8.2B1-201 Mantle Environment: DO NOT REPORT THIS CRASH! Unsupported mods in environment: optifine ThermalFoundation: -[1.7.10]1.2.6-118 ThermalExpansion: -[1.7.10]4.1.5-248 TConstruct Environment: Environment healthy. OptiFine Version: OptiFine_1.7.10_HD_U_E7 Render Distance Chunks: 12 Mipmaps: 4 Anisotropic Filtering: 1 Antialiasing: 0 Multitexture: false Shaders: null OpenGlVersion: 4.5.13537 Compatibility Profile Context 24.20.13001.1010 OpenGlRenderer: Radeon RX 580 Series OpenGlVendor: ATI Technologies Inc. CpuCount: 6

By a quick look through, damage indicators has a UE meaning by the structure of the letters, U, C, E & otherwise, it won't work. I do this first to see if a mod doesn't work. If there is no UE state for the mod though, then looking deeper for other things would be necessary. If its an unsupported version however like you said either its the mod isn't the 1.7.10 supported version, or it for some reason has issues for other reasons which has happened to me before with 1.7.10. Maybe java version even though newer versions of java can't run 1.7.10 anymore unless you use something like Twitch or MultiMC5, but the vanilla launcher won't that well from my experiences. Or at least its obviously the mods won't work for that java version anymore maybe?

Either way, the quick thing to do is try using a different damage indicators file or removing it or other options if its the instance problem besides the mod erroring here and seeing what happens from there. Since can't know if its other reasons than that besides that file erroring at least with a quick look over even with my limited understanding of crash report besides reading the UE letters.

Just always check if you see a UE in the crash report, if not then you'd have to work out a few things between mods or java versions, or Forge or the Minecraft version.