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Everytime I play, I crashed and showed Game Output saying:

Aug 28, 2015 1:21:16 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Loading tweak class name optifine.OptiFineTweaker
Aug 28, 2015 1:21:17 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Using primary tweak class name optifine.OptiFineTweaker
Aug 28, 2015 1:21:17 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Calling tweak class optifine.OptiFineTweaker
OptiFineTweaker: acceptOptions
OptiFineTweaker: injectIntoClassLoader skipped, OptiFine is loaded as a library
OptiFineTweaker: getLaunchArguments
OptiFineTweaker: getLaunchTarget
Aug 28, 2015 1:21:17 PM net.minecraft.launchwrapper.LogWrapper log
INFO: Launching wrapped minecraft {net.minecraft.client.main.Main}
[13:21:21] [Client thread/INFO]: Setting user: EpicPixelness
[13:21:21] [Client thread/INFO]: (Session ID is token:edd2e19a6ec347f4abef9336e121798d:2574f73af5d44b73be6c716d2e8e7863)
[OptiFine] (Reflector) Method not present: afh.func_149713_g
[13:21:26] [Client thread/INFO]: LWJGL Version: 2.9.4
[OptiFine]
[OptiFine] OptiFine_1.8.7_HD_U_D6
[OptiFine] Fri Aug 28 13:21:27 EDT 2015
[OptiFine] OS: Windows 10 (amd64) version 10.0
[OptiFine] Java: 1.8.0_25, Oracle Corporation
[OptiFine] VM: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
[OptiFine] LWJGL: 2.9.4
[OptiFine] OpenGL: Intel(R) HD Graphics, version 2.1.0 - Build 8.15.10.2900, Intel
[OptiFine] OpenGL Version: 2.1
[OptiFine] OpenGL Fancy fog: Not available (GL_NV_fog_distance)
[OptiFine] Maximum texture size: 8192x8192
[OptiFine] Checking for new version
[13:21:27] [Client thread/INFO]: Reloading ResourceManager: Default
[OptiFine] Version found: D6
[OptiFine] *** Reloading textures ***
[OptiFine] Resource packs: Default
[OptiFine] (Reflector) Class not present: ModLoader
[OptiFine] (Reflector) Class not present: net.minecraft.src.FMLRenderAccessLibrary
[OptiFine] (Reflector) Class not present: LightCache
[OptiFine] (Reflector) Class not present: BlockCoord
[OptiFine] (Reflector) Class not present: net.minecraftforge.common.MinecraftForge
[OptiFine] (Reflector) Class not present: net.minecraftforge.common.ForgeHooks
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.MinecraftForgeClient
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.ForgeHooksClient
[OptiFine] (Reflector) Class not present: net.minecraftforge.fml.common.FMLCommonHandler
[OptiFine] (Reflector) Class not present: net.minecraftforge.fml.client.FMLClientHandler
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.IItemRenderer$ItemRenderType
[OptiFine] (Reflector) Method not present: anm.getSkyRenderer
[OptiFine] (Reflector) Method not present: anm.getCloudRenderer
[OptiFine] (Reflector) Method not present: anm.getWeatherRenderer
[OptiFine] (Reflector) Method not present: adm.countEntities
[OptiFine] (Reflector) Method not present: adm.getPerWorldStorage
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.IRenderHandler
[OptiFine] (Reflector) Class not present: net.minecraftforge.common.DimensionManager
[OptiFine] (Reflector) Class not present: net.minecraftforge.event.world.WorldEvent$Load
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.event.GuiScreenEvent$DrawScreenEvent$Pre
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.event.GuiScreenEvent$DrawScreenEvent$Post
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.event.EntityViewRenderEvent$FogColors
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.event.EntityViewRenderEvent$FogDensity
[OptiFine] (Reflector) Class not present: net.minecraftforge.client.event.EntityViewRenderEvent$RenderFogEvent
[OptiFine] (Reflector) Class not present: net.minecraftforge.fml.common.eventhandler.EventBus
[OptiFine] (Reflector) Class not present: net.minecraftforge.fml.common.eventhandler.Event$Result
[OptiFine] (Reflector) Class not present: net.minecraftforge.event.ForgeEventFactory
[OptiFine] (Reflector) Class not present: net.minecraftforge.event.world.ChunkWatchEvent$UnWatch
[OptiFine] (Reflector) Method not present: afh.getBedDirection
[OptiFine] (Reflector) Method not present: afh.isBedFoot
[OptiFine] (Reflector) Method not present: afh.hasTileEntity
[OptiFine] (Reflector) Method not present: afh.canCreatureSpawn
[OptiFine] (Reflector) Method not present: afh.addHitEffects
[OptiFine] (Reflector) Method not present: afh.addDestroyEffects
[OptiFine] (Reflector) Method not present: afh.isAir
[OptiFine] (Reflector) Method not present: afh.canRenderInLayer
[OptiFine] (Reflector) Field not present: pk.captureDrops
[OptiFine] (Reflector) Field not present: pk.capturedDrops
[OptiFine] (Reflector) Method not present: pk.shouldRenderInPass
[OptiFine] (Reflector) Method not present: pk.canRiderInteract
[OptiFine] (Reflector) Method not present: akw.shouldRenderInPass
[OptiFine] (Reflector) Method not present: akw.getRenderBoundingBox
[OptiFine] (Reflector) Method not present: akw.canRenderBreaking
[OptiFine] (Reflector) Method not present: zw.onEntitySwing
[OptiFine] (Reflector) Method not present: pf.isCurativeItem
[OptiFine] (Reflector) Method not present: aak.getRecordResource
[OptiFine] (Reflector) Method not present: bmv$b.preDraw
[OptiFine] (Reflector) Method not present: bmv$b.postDraw
[13:21:28] [Sound Library Loader/INFO]: Starting up SoundSystem...
[13:21:28] [Thread-7/INFO]: Initializing LWJGL OpenAL
[13:21:28] [Thread-7/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
[13:21:28] [Thread-7/INFO]: OpenAL initialized.
[13:21:29] [Sound Library Loader/INFO]: Sound engine started
[OptiFine] Mipmap levels: 4
[OptiFine] Multitexture: false
[13:21:43] [Client thread/INFO]: Created: 512x512 textures-atlas
[OptiFine] *** Reloading custom textures ***
[OptiFine] Loading custom colors: textures/colormap/grass.png
[OptiFine] Loading custom colors: textures/colormap/foliage.png
[13:21:53] [Client thread/ERROR]: Can't ping us.hivemc.com: Internal Exception: java.io.IOException: An existing connection was forcibly closed by the remote host
[13:21:53] [Client thread/ERROR]: Can't ping BowYee_Games.aternos.me: Disconnected
[13:22:01] [Client thread/INFO]: Connecting to offline.aternos.org., 25565
[13:22:29] [Client thread/INFO]: Connecting to lion.aternos.org., 43498
[13:22:36] [Client thread/INFO]: [CHAT] EpicPixelness joined the game
[13:23:12] [Client thread/INFO]: [CHAT] Set the time to 1000
=============== DEBUG MESSAGE: unimplemented bytecode ================

#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_PRIV_INSTRUCTION (0xc0000096) at pc=0x0000000002a25676, pid=5372, tid=2168
#
# JRE version: Java(TM) SE Runtime Environment (8.0_25-b18) (build 1.8.0_25-b18)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.25-b02 mixed mode windows-amd64 compressed oops)
# Problematic frame:
# j ave.a()V+-63
#
# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
#
# An error report file with more information is saved as:
# C:\Users\User\AppData\Roaming\.minecraft\hs_err_pid5372.log
#
# If you would like to submit a bug report, please visit:
# http://bugreport.sun.com/bugreport/crash.jsp
#
AL lib: (EE) alc_cleanup: 1 device not closed
Java HotSpot(TM) 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release

What is happening

ya

Gets worser When I remove Opfine, But It is okay, I figured it out, Something is wrong with .minecraft

did you not install forge? .-. cause if so you might want to