I tried to play with it in multiplayer but after some minutes it display a crash
This is the crash
[OptiFine] [OptiFine] OptiFine_1.8_HD_U_B2 [OptiFine] Fri Mar 10 17:22:53 CET 2017 [OptiFine] OS: Windows XP (x86) version 5.1 [OptiFine] Java: 1.8.0_121, Oracle Corporation [OptiFine] VM: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation [OptiFine] LWJGL: 2.9.1 [OptiFine] OpenGL: Intel 945G, version 1.4.0 - Build 7.14.10.4926, Intel [OptiFine] OpenGL Version: 1.3 [OptiFine] OpenGL Fancy fog: Not available (GL_NV_fog_distance) [OptiFine] OpenGL Occlussion culling: Not available (GL_ARB_occlusion_query) [OptiFine] Maximum texture size: 2048x2048 [OptiFine] *** Reloading textures *** [OptiFine] Resource packs: Default [OptiFine] Checking for new version [OptiFine] Version found: H6 [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$ItemRenderType [OptiFine] (Reflector) Method not pesent: net.minecraft.world.WorldProvider.getSkyRenderer [OptiFine] (Reflector) Method not pesent: net.minecraft.world.WorldProvider.getCloudRenderer [OptiFine] (Reflector) Method not pesent: net.minecraft.world.WorldProvider.getWeatherRenderer [OptiFine] (Reflector) Method not pesent: net.minecraft.world.World.countEntities [OptiFine] (Reflector) Class not present: net.minecraftforge.client.IRenderHandler [OptiFine] (Reflector) Class not present: net.minecraftforge.common.DimensionManager [OptiFine] (Reflector) Class not present: net.minecraftforge.event.world.WorldEvent$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$UnWatch [OptiFine] (Reflector) Method not pesent: net.minecraft.block.Block.getBedDirection [OptiFine] (Reflector) Method not pesent: net.minecraft.block.Block.isBedFoot [OptiFine] (Reflector) Method not pesent: net.minecraft.block.Block.canRenderInPass [OptiFine] (Reflector) Method not pesent: net.minecraft.block.Block.hasTileEntity [OptiFine] (Reflector) Method not pesent: net.minecraft.block.Block.canCreatureSpawn [OptiFine] (Reflector) Field not present: net.minecraft.entity.Entity.captureDrops [OptiFine] (Reflector) Field not present: net.minecraft.entity.Entity.capturedDrops [OptiFine] (Reflector) Method not pesent: net.minecraft.entity.Entity.shouldRenderInPass [OptiFine] (Reflector) Method not pesent: net.minecraft.entity.Entity.canRiderInteract [OptiFine] (Reflector) Method not pesent: net.minecraft.tileentity.TileEntity.shouldRenderInPass [OptiFine] (Reflector) Method not pesent: net.minecraft.tileentity.TileEntity.getRenderBoundingBox [OptiFine] (Reflector) Method not pesent: net.minecraft.item.Item.onEntitySwing [OptiFine] (Reflector) Method not pesent: net.minecraft.potion.PotionEffect.isCurativeItem [OptiFine] (Reflector) Method not pesent: net.minecraft.item.ItemStack.hasEffect [OptiFine] (Reflector) Method not pesent: net.minecraft.item.ItemRecord.getRecordResource Starting Client... [OptiFine] *** Reloading custom textures *** [OptiFine] Loading custom colors: textures/colormap/grass.png [OptiFine] Loading custom colors: textures/colormap/foliage.png java.security.SignatureException: Signature length not correct: got 0 but was expecting 512 at sun.security.rsa.RSASignature.engineVerify(Unknown Source) at java.security.Signature$Delegate.engineVerify(Unknown Source) at java.security.Signature.verify(Unknown Source) at com.mojang.authlib.properties.Property.isSignatureValid(Property.java:43) at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.getTextures(YggdrasilMinecraftSessionService.java:129) at net.minecraft.client.resources.SkinManager$3.run(SkinManager.java:126) at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) 17:23:38.890 [pool-2-thread-1] ERROR com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService - Textures payload has been tampered with (signature invalid) java.security.SignatureException: Signature length not correct: got 0 but was expecting 512 at sun.security.rsa.RSASignature.engineVerify(Unknown Source) at java.security.Signature$Delegate.engineVerify(Unknown Source) at java.security.Signature.verify(Unknown Source) at com.mojang.authlib.properties.Property.isSignatureValid(Property.java:43) at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.getTextures(YggdrasilMinecraftSessionService.java:129) at net.minecraft.client.resources.SkinManager$3.run(SkinManager.java:126) at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) 17:23:54.375 [pool-2-thread-1] ERROR com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService - Textures payload has been tampered with (signature invalid) java.security.SignatureException: Signature length not correct: got 0 but was expecting 512 at sun.security.rsa.RSASignature.engineVerify(Unknown Source) at java.security.Signature$Delegate.engineVerify(Unknown Source) at java.security.Signature.verify(Unknown Source) at com.mojang.authlib.properties.Property.isSignatureValid(Property.java:43) at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.getTextures(YggdrasilMinecraftSessionService.java:129) at net.minecraft.client.resources.SkinManager$3.run(SkinManager.java:126) at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) 17:24:10.968 [pool-2-thread-1] ERROR com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService - Textures payload has been tampered with (signature invalid) java.security.SignatureException: Signature length not correct: got 0 but was expecting 512 at sun.security.rsa.RSASignature.engineVerify(Unknown Source) at java.security.Signature$Delegate.engineVerify(Unknown Source) at java.security.Signature.verify(Unknown Source) at com.mojang.authlib.properties.Property.isSignatureValid(Property.java:43) at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.getTextures(YggdrasilMinecraftSessionService.java:129) at net.minecraft.client.resources.SkinManager$3.run(SkinManager.java:126) at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) 17:25:28.796 [pool-2-thread-2] ERROR com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService - Textures payload has been tampered with (signature invalid) java.security.SignatureException: Signature length not correct: got 0 but was expecting 512 at sun.security.rsa.RSASignature.engineVerify(Unknown Source) at java.security.Signature$Delegate.engineVerify(Unknown Source) at java.security.Signature.verify(Unknown Source) at com.mojang.authlib.properties.Property.isSignatureValid(Property.java:43) at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.getTextures(YggdrasilMinecraftSessionService.java:129) at net.minecraft.client.resources.SkinManager$3.run(SkinManager.java:126) at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) 17:25:47.250 [pool-2-thread-2] ERROR com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService - Textures payload has been tampered with (signature invalid) java.security.SignatureException: Signature length not correct: got 0 but was expecting 512 at sun.security.rsa.RSASignature.engineVerify(Unknown Source) at java.security.Signature$Delegate.engineVerify(Unknown Source) at java.security.Signature.verify(Unknown Source) at com.mojang.authlib.properties.Property.isSignatureValid(Property.java:43) at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.getTextures(YggdrasilMinecraftSessionService.java:129) at net.minecraft.client.resources.SkinManager$3.run(SkinManager.java:126) at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) 17:25:49.328 [pool-2-thread-2] ERROR com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService - Textures payload has been tampered with (signature invalid) java.security.SignatureException: Signature length not correct: got 0 but was expecting 512 at sun.security.rsa.RSASignature.engineVerify(Unknown Source) at java.security.Signature$Delegate.engineVerify(Unknown Source) at java.security.Signature.verify(Unknown Source) at com.mojang.authlib.properties.Property.isSignatureValid(Property.java:43) at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.getTextures(YggdrasilMinecraftSessionService.java:129) at net.minecraft.client.resources.SkinManager$3.run(SkinManager.java:126) at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) at java.util.concurrent.FutureTask.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) 17:25:52.218 [pool-2-thread-2] ERROR com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService - Textures payload has been tampered with (signature invalid) # # A fatal error has been detected by the Java Runtime Environment: # # EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x7c921c63, pid=3716, tid=0x00000c5c # # JRE version: Java(TM) SE Runtime Environment (8.0_121-b13) (build 1.8.0_121-b13) # Java VM: Java HotSpot(TM) Client VM (25.121-b13 mixed mode windows-x86 ) # Problematic frame: # C [ntdll.dll+0x11c63] # # 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: # D:\Documents and Settings\Mohamed\Application Data\.minecraft\hs_err_pid3716.log # # If you would like to submit a bug report, please visit: # http://bugreport.java.com/bugreport/crash.jsp # The crash happened outside the Java Virtual Machine in native code. # See problematic frame for where to report the bug. #
[OptiFine]
[OptiFine] OptiFine_1.8_HD_U_B2
[OptiFine] Fri Mar 10 17:22:53 CET 2017
[OptiFine] OS: Windows XP (x86) version 5.1
[OptiFine] Java: 1.8.0_121, Oracle Corporation
[OptiFine] VM: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
[OptiFine] LWJGL: 2.9.1
[OptiFine] OpenGL: Intel 945G, version 1.4.0 - Build 7.14.10.4926, Intel
[OptiFine] OpenGL Version: 1.3
[OptiFine] OpenGL Fancy fog: Not available (GL_NV_fog_distance)
[OptiFine] OpenGL Occlussion culling: Not available (GL_ARB_occlusion_query)
[OptiFine] Maximum texture size: 2048x2048
[OptiFine] *** Reloading textures ***
[OptiFine] Resource packs: Default
[OptiFine] Checking for new version
[OptiFine] Version found: H6
[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 pesent: net.minecraft.world.WorldProvider.getSkyRenderer
[OptiFine] (Reflector) Method not pesent: net.minecraft.world.WorldProvider.getCloudRenderer
[OptiFine] (Reflector) Method not pesent: net.minecraft.world.WorldProvider.getWeatherRenderer
[OptiFine] (Reflector) Method not pesent: net.minecraft.world.World.countEntities
[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 pesent: net.minecraft.block.Block.getBedDirection
[OptiFine] (Reflector) Method not pesent: net.minecraft.block.Block.isBedFoot
[OptiFine] (Reflector) Method not pesent: net.minecraft.block.Block.canRenderInPass
[OptiFine] (Reflector) Method not pesent: net.minecraft.block.Block.hasTileEntity
[OptiFine] (Reflector) Method not pesent: net.minecraft.block.Block.canCreatureSpawn
[OptiFine] (Reflector) Field not present: net.minecraft.entity.Entity.captureDrops
[OptiFine] (Reflector) Field not present: net.minecraft.entity.Entity.capturedDrops
[OptiFine] (Reflector) Method not pesent: net.minecraft.entity.Entity.shouldRenderInPass
[OptiFine] (Reflector) Method not pesent: net.minecraft.entity.Entity.canRiderInteract
[OptiFine] (Reflector) Method not pesent: net.minecraft.tileentity.TileEntity.shouldRenderInPass
[OptiFine] (Reflector) Method not pesent: net.minecraft.tileentity.TileEntity.getRenderBoundingBox
[OptiFine] (Reflector) Method not pesent: net.minecraft.item.Item.onEntitySwing
[OptiFine] (Reflector) Method not pesent: net.minecraft.potion.PotionEffect.isCurativeItem
[OptiFine] (Reflector) Method not pesent: net.minecraft.item.ItemStack.hasEffect
[OptiFine] (Reflector) Method not pesent: net.minecraft.item.ItemRecord.getRecordResource
Starting Client...
[OptiFine] *** Reloading custom textures ***
[OptiFine] Loading custom colors: textures/colormap/grass.png
[OptiFine] Loading custom colors: textures/colormap/foliage.png
java.security.SignatureException: Signature length not correct: got 0 but was expecting 512
at sun.security.rsa.RSASignature.engineVerify(Unknown Source)
at java.security.Signature$Delegate.engineVerify(Unknown Source)
at java.security.Signature.verify(Unknown Source)
at com.mojang.authlib.properties.Property.isSignatureValid(Property.java:43)
at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.getTextures(YggdrasilMinecraftSessionService.java:129)
at net.minecraft.client.resources.SkinManager$3.run(SkinManager.java:126)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
17:23:38.890 [pool-2-thread-1] ERROR com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService - Textures payload has been tampered with (signature invalid)
java.security.SignatureException: Signature length not correct: got 0 but was expecting 512
at sun.security.rsa.RSASignature.engineVerify(Unknown Source)
at java.security.Signature$Delegate.engineVerify(Unknown Source)
at java.security.Signature.verify(Unknown Source)
at com.mojang.authlib.properties.Property.isSignatureValid(Property.java:43)
at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.getTextures(YggdrasilMinecraftSessionService.java:129)
at net.minecraft.client.resources.SkinManager$3.run(SkinManager.java:126)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
17:23:54.375 [pool-2-thread-1] ERROR com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService - Textures payload has been tampered with (signature invalid)
java.security.SignatureException: Signature length not correct: got 0 but was expecting 512
at sun.security.rsa.RSASignature.engineVerify(Unknown Source)
at java.security.Signature$Delegate.engineVerify(Unknown Source)
at java.security.Signature.verify(Unknown Source)
at com.mojang.authlib.properties.Property.isSignatureValid(Property.java:43)
at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.getTextures(YggdrasilMinecraftSessionService.java:129)
at net.minecraft.client.resources.SkinManager$3.run(SkinManager.java:126)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
17:24:10.968 [pool-2-thread-1] ERROR com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService - Textures payload has been tampered with (signature invalid)
java.security.SignatureException: Signature length not correct: got 0 but was expecting 512
at sun.security.rsa.RSASignature.engineVerify(Unknown Source)
at java.security.Signature$Delegate.engineVerify(Unknown Source)
at java.security.Signature.verify(Unknown Source)
at com.mojang.authlib.properties.Property.isSignatureValid(Property.java:43)
at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.getTextures(YggdrasilMinecraftSessionService.java:129)
at net.minecraft.client.resources.SkinManager$3.run(SkinManager.java:126)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
17:25:28.796 [pool-2-thread-2] ERROR com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService - Textures payload has been tampered with (signature invalid)
java.security.SignatureException: Signature length not correct: got 0 but was expecting 512
at sun.security.rsa.RSASignature.engineVerify(Unknown Source)
at java.security.Signature$Delegate.engineVerify(Unknown Source)
at java.security.Signature.verify(Unknown Source)
at com.mojang.authlib.properties.Property.isSignatureValid(Property.java:43)
at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.getTextures(YggdrasilMinecraftSessionService.java:129)
at net.minecraft.client.resources.SkinManager$3.run(SkinManager.java:126)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
17:25:47.250 [pool-2-thread-2] ERROR com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService - Textures payload has been tampered with (signature invalid)
java.security.SignatureException: Signature length not correct: got 0 but was expecting 512
at sun.security.rsa.RSASignature.engineVerify(Unknown Source)
at java.security.Signature$Delegate.engineVerify(Unknown Source)
at java.security.Signature.verify(Unknown Source)
at com.mojang.authlib.properties.Property.isSignatureValid(Property.java:43)
at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.getTextures(YggdrasilMinecraftSessionService.java:129)
at net.minecraft.client.resources.SkinManager$3.run(SkinManager.java:126)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
17:25:49.328 [pool-2-thread-2] ERROR com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService - Textures payload has been tampered with (signature invalid)
java.security.SignatureException: Signature length not correct: got 0 but was expecting 512
at sun.security.rsa.RSASignature.engineVerify(Unknown Source)
at java.security.Signature$Delegate.engineVerify(Unknown Source)
at java.security.Signature.verify(Unknown Source)
at com.mojang.authlib.properties.Property.isSignatureValid(Property.java:43)
at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.getTextures(YggdrasilMinecraftSessionService.java:129)
at net.minecraft.client.resources.SkinManager$3.run(SkinManager.java:126)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
17:25:52.218 [pool-2-thread-2] ERROR com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService - Textures payload has been tampered with (signature invalid)
#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x7c921c63, pid=3716, tid=0x00000c5c
#
# JRE version: Java(TM) SE Runtime Environment (8.0_121-b13) (build 1.8.0_121-b13)
# Java VM: Java HotSpot(TM) Client VM (25.121-b13 mixed mode windows-x86 )
# Problematic frame:
# C [ntdll.dll+0x11c63]
#
# 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:
# D:\Documents and Settings\Mohamed\Application Data\.minecraft\hs_err_pid3716.log
#
# If you would like to submit a bug report, please visit:
# http://bugreport.java.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#
Thank you
Update your graphics drivers. Since your using Windows XP, you might continue to have problems playing MC on that PC.
"We live on a placid island of ignorance in the midst of black seas of infinity, and it was not meant that we should voyage far."