Minecraft Crashes Upon Every Launch

IGuy43 · April 4, 2017

Every time I attempt to run minecraft 11.1.2 I receive the following message:

The game crashed whilst initializing game
Error: java.lang.VerifyError: Inconsistent stackmap frames at branch target 21

As well as the following:

The game crashed whilst initializing game

Error: java.lang.VerifyError: Bad return type

Edited April 4, 2017 by IGuy43

IGuy43 · April 4, 2017

13 minutes ago, diesieben07 said:

You have a broken coremod installed.

I may have an outdated version of optifine running now that you mention it...

IGuy43 · April 4, 2017

I have attempted to fix this problem, but I can't seem to resolve the issues. I have downloaded and installed the latest version of Optfine, but the game still crashes every time I attempt to launch it.

IGuy43 · April 4, 2017

---- Minecraft Crash Report ----

WARNING: coremods are present:
Contact their authors BEFORE contacting forge

// Uh... Did I do that?

Time: 4/4/17 5:47 PM
Description: Initializing game

java.lang.VerifyError: Inconsistent stackmap frames at branch target 21
Exception Details:
Location:
Config.getWorldServer()Lnet/minecraft/world/WorldServerMulti; @21: getstatic
Reason:
Type 'net/minecraft/client/model/ModelBiped' (current frame, locals[0]) is not assignable to 'net/minecraft/enchantment/EnchantmentArrowKnockback' (stack map, locals[0])
Current Frame:
bci: @16
flags: { }
locals: { 'net/minecraft/client/model/ModelBiped' }
stack: { 'net/minecraft/client/model/ModelBiped' }
Stackmap Frame:
bci: @21
flags: { }
locals: { 'net/minecraft/enchantment/EnchantmentArrowKnockback' }
stack: { }
Bytecode:
0x0000000: b200 7ac7 0005 01b0 b200 7ab4 0541 4b2a
0x0000010: c700 0501 b0b2 007a b605 459a 0005 01b0
0x0000020: b200 7ab6 0548 4c2b c700 0501 b02a b405
0x0000030: 4d4d 2cc7 0005 01b0 2cb6 0552 4e2b 2db6
0x0000040: 0556 b605 593a 0419 04b0 3a04 01b0
Exception Handler Table:
bci [61, 73] => handler: 74
Stackmap Table:
same_frame(@8)
append_frame(@21,Object[#1347])
same_frame(@32)
append_frame(@45,Object[#1354])
append_frame(@56,Object[#1359])
full_frame(@74,{Object[#1347],Object[#1354],Object[#1359],Object[#1364]},{Object[#1341]})

   at java.lang.Class.getDeclaredFields0(Native Method)
   at java.lang.Class.privateGetDeclaredFields(Class.java:2575)
   at java.lang.Class.getField0(Class.java:2967)
   at java.lang.Class.getField(Class.java:1693)
   at net.minecraftforge.fml.client.FMLClientHandler.detectOptifine(FMLClientHandler.java:309)
   at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:216)
   at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:440)
   at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:352)
   at net.minecraft.client.main.Main.main(SourceFile:124)
   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:483)
   at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
   at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

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

-- Head --
Thread: Client thread
Stacktrace:
   at java.lang.Class.getDeclaredFields0(Native Method)
   at java.lang.Class.privateGetDeclaredFields(Class.java:2575)
   at java.lang.Class.getField0(Class.java:2967)
   at java.lang.Class.getField(Class.java:1693)
   at net.minecraftforge.fml.client.FMLClientHandler.detectOptifine(FMLClientHandler.java:309)
   at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:216)
   at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:440)

-- Initialization --
Details:
Stacktrace:
   at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:352)
   at net.minecraft.client.main.Main.main(SourceFile:124)
   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:483)
   at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
   at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
   Minecraft Version: 1.11.2
   Operating System: Windows 10 (amd64) version 10.0
   Java Version: 1.8.0_25, Oracle Corporation
   Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
   Memory: 76508944 bytes (72 MB) / 260186112 bytes (248 MB) up to 1060372480 bytes (1011 MB)
   JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
   IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
   FML:
   Loaded coremods (and transformers):
   Launched Version: 1.11.2-forge1.11.2-13.20.0.2259
   LWJGL: 2.9.4
   OpenGL: GeForce GT 620/PCIe/SSE2 GL version 4.5.0 NVIDIA 375.63, NVIDIA Corporation
   GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

   Using VBOs: Yes
   Is Modded: Definitely; Client brand changed to 'fml,forge'
   Type: Client (map_client.txt)
   Resource Packs: OR Textures - V. 2.3.0 (7).zip (incompatible)
   Current Language: ~~ERROR~~ NullPointerException: null
   Profiler Position: N/A (disabled)
   CPU: 8x Intel(R) Core(TM) i7-4770S CPU @ 3.10GHz

IGuy43 · April 4, 2017

[18:20:46] [main/DEBUG] [FML/]: Injecting tracing printstreams for STDOUT/STDERR.
[18:20:46] [main/INFO] [FML/]: Forge Mod Loader version 13.20.0.2259 for Minecraft 1.11.2 loading
[18:20:46] [main/INFO] [FML/]: Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_25, running on Windows 10:amd64:10.0, installed at C:\Program Files (x86)\Minecraft\runtime\jre-x64\1.8.0_25
[18:20:46] [main/DEBUG] [FML/]: Java classpath at launch is C:\Users\IAN\AppData\Roaming\.minecraft\libraries\net\minecraftforge\forge\1.11.2-13.20.0.2259\forge-1.11.2-13.20.0.2259.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.12\launchwrapper-1.12.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-all\5.0.3\asm-all-5.0.3.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\jline\jline\2.13\jline-2.13.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\com\typesafe\akka\akka-actor_2.11\2.3.3\akka-actor_2.11-2.3.3.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\com\typesafe\config\1.2.1\config-1.2.1.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-actors-migration_2.11\1.1.0\scala-actors-migration_2.11-1.1.0.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-compiler\2.11.1\scala-compiler-2.11.1.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\org\scala-lang\plugins\scala-continuations-library_2.11\1.0.2\scala-continuations-library_2.11-1.0.2.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\org\scala-lang\plugins\scala-continuations-plugin_2.11.1\1.0.2\scala-continuations-plugin_2.11.1-1.0.2.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-library\2.11.1\scala-library-2.11.1.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-parser-combinators_2.11\1.0.1\scala-parser-combinators_2.11-1.0.1.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-reflect\2.11.1\scala-reflect-2.11.1.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-swing_2.11\1.0.1\scala-swing_2.11-1.0.1.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-xml_2.11\1.0.2\scala-xml_2.11-1.0.2.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\lzma\lzma\0.0.1\lzma-0.0.1.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.6\jopt-simple-4.6.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\java3d\vecmath\1.5.2\vecmath-1.5.2.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\net\sf\trove4j\trove4j\3.0.3\trove4j-3.0.3.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\net\minecraftforge\MercuriusUpdater\1.11.2\MercuriusUpdater-1.11.2.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\com\mojang\netty\1.6\netty-1.6.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\oshi-project\oshi-core\1.1\oshi-core-1.1.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\net\java\dev\jna\jna\3.4.0\jna-3.4.0.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\net\java\dev\jna\platform\3.4.0\platform-3.4.0.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\com\ibm\icu\icu4j-core-mojang\51.2\icu4j-core-mojang-51.2.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.6\jopt-simple-4.6.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\io\netty\netty-all\4.0.23.Final\netty-all-4.0.23.Final.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\17.0\guava-17.0.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.3.2\commons-lang3-3.3.2.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\commons-codec\commons-codec\1.9\commons-codec-1.9.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.4\gson-2.2.4.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\1.5.24\authlib-1.5.24.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\com\mojang\realms\1.10.14\realms-1.10.14.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-compress\1.8.1\commons-compress-1.8.1.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpclient\4.3.3\httpclient-4.3.3.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\commons-logging\commons-logging\1.1.3\commons-logging-1.1.3.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpcore\4.3.2\httpcore-4.3.2.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\it\unimi\dsi\fastutil\7.0.12_mojang\fastutil-7.0.12_mojang.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-api\2.0-beta9\log4j-api-2.0-beta9.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-core\2.0-beta9\log4j-core-2.0-beta9.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.4-nightly-20150209\lwjgl-2.9.4-nightly-20150209.jar;C:\Users\IAN\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.4-nightly-20150209\lwjgl_util-2.9.4-nightly-20150209.jar;C:\Users\IAN\AppData\Roaming\.minecraft\versions\1.11.2\1.11.2.jar
[18:20:46] [main/DEBUG] [FML/]: Java library path at launch is C:\Users\IAN\AppData\Local\Temp\520b-2a61-eb34-dc97
[18:20:46] [main/DEBUG] [FML/]: Enabling runtime deobfuscation
[18:20:46] [main/DEBUG] [FML/]: Instantiating coremod class FMLCorePlugin
[18:20:46] [main/DEBUG] [FML/]: Added access transformer class net.minecraftforge.fml.common.asm.transformers.AccessTransformer to enqueued access transformers
[18:20:46] [main/DEBUG] [FML/]: Enqueued coremod FMLCorePlugin
[18:20:46] [main/DEBUG] [FML/]: Instantiating coremod class FMLForgePlugin
[18:20:46] [main/DEBUG] [FML/]: Enqueued coremod FMLForgePlugin
[18:20:46] [main/DEBUG] [FML/]: All fundamental core mods are successfully located
[18:20:46] [main/DEBUG] [FML/]: Attempting to load commandline specified mods, relative to C:\Users\IAN\AppData\Roaming\.minecraft
[18:20:46] [main/DEBUG] [FML/]: Discovering coremods
[18:20:47] [main/DEBUG] [FML/]: Examining for coremod candidacy OptiFine_1.10.2_HD_U_C3.jar
[18:20:47] [main/INFO] [FML/]: Loading tweaker optifine.OptiFineForgeTweaker from OptiFine_1.10.2_HD_U_C3.jar
[18:20:47] [main/DEBUG] [FML/]: Examining for coremod candidacy worldedit-forge-mc1.10.2-6.1.4-SNAPSHOT-dist (1).jar
[18:20:47] [main/DEBUG] [FML/]: Not found coremod data in worldedit-forge-mc1.10.2-6.1.4-SNAPSHOT-dist (1).jar
[18:20:47] [main/INFO] [LaunchWrapper/]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
[18:20:47] [main/INFO] [LaunchWrapper/]: Loading tweak class name optifine.OptiFineForgeTweaker
[18:20:47] [main/INFO] [LaunchWrapper/]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLDeobfTweaker
[18:20:47] [main/INFO] [LaunchWrapper/]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
[18:20:47] [main/INFO] [LaunchWrapper/]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
[18:20:47] [main/INFO] [LaunchWrapper/]: Calling tweak class optifine.OptiFineForgeTweaker
[18:20:47] [main/INFO] [STDOUT/]: [optifine.OptiFineForgeTweaker:dbg:56]: OptiFineForgeTweaker: acceptOptions
[18:20:47] [main/INFO] [STDOUT/]: [optifine.OptiFineForgeTweaker:dbg:56]: OptiFineForgeTweaker: injectIntoClassLoader
[18:20:47] [main/INFO] [STDOUT/]: [optifine.OptiFineClassTransformer:dbg:266]: OptiFine ClassTransformer
[18:20:47] [main/INFO] [STDOUT/]: [optifine.OptiFineClassTransformer:dbg:266]: OptiFine URL: file:/C:/Users/IAN/AppData/Roaming/.minecraft/mods/OptiFine_1.10.2_HD_U_C3.jar
[18:20:47] [main/INFO] [STDOUT/]: [optifine.OptiFineClassTransformer:dbg:266]: OptiFine ZIP file: C:\Users\IAN\AppData\Roaming\.minecraft\mods\OptiFine_1.10.2_HD_U_C3.jar
[18:20:47] [main/INFO] [LaunchWrapper/]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
[18:20:47] [main/DEBUG] [FML/]: Injecting coremod FMLCorePlugin {net.minecraftforge.fml.relauncher.FMLCorePlugin} class transformers
[18:20:47] [main/TRACE] [FML/]: Registering transformer net.minecraftforge.fml.common.asm.transformers.BlamingTransformer
[18:20:47] [main/TRACE] [FML/]: Registering transformer net.minecraftforge.fml.common.asm.transformers.SideTransformer
[18:20:47] [main/TRACE] [FML/]: Registering transformer net.minecraftforge.fml.common.asm.transformers.EventSubscriptionTransformer
[18:20:47] [main/TRACE] [FML/]: Registering transformer net.minecraftforge.fml.common.asm.transformers.EventSubscriberTransformer
[18:20:47] [main/DEBUG] [FML/]: Injection complete
[18:20:47] [main/DEBUG] [FML/]: Running coremod plugin for FMLCorePlugin {net.minecraftforge.fml.relauncher.FMLCorePlugin}
[18:20:47] [main/DEBUG] [FML/]: Running coremod plugin FMLCorePlugin
[18:20:47] [main/DEBUG] [FML/]: Read 959 binary patches
[18:20:47] [main/DEBUG] [FML/]: Loading deobfuscation resource /deobfuscation_data-1.11.2.lzma with 33539 records
[18:20:48] [main/INFO] [FML/]: Found valid fingerprint for Minecraft Forge. Certificate fingerprint e3c3d50c7c986df74c645c0ac54639741c90a557
[18:20:48] [main/INFO] [FML/]: Found valid fingerprint for Minecraft. Certificate fingerprint cd99959656f753dc28d863b46769f7f8fbaefcfc
[18:20:48] [main/DEBUG] [FML/]: Coremod plugin class FMLCorePlugin run successfully
[18:20:48] [main/INFO] [LaunchWrapper/]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
[18:20:48] [main/DEBUG] [FML/]: Injecting coremod FMLForgePlugin {net.minecraftforge.classloading.FMLForgePlugin} class transformers
[18:20:48] [main/DEBUG] [FML/]: Injection complete
[18:20:48] [main/DEBUG] [FML/]: Running coremod plugin for FMLForgePlugin {net.minecraftforge.classloading.FMLForgePlugin}
[18:20:48] [main/DEBUG] [FML/]: Running coremod plugin FMLForgePlugin
[18:20:48] [main/DEBUG] [FML/]: Coremod plugin class FMLForgePlugin run successfully
[18:20:48] [main/INFO] [LaunchWrapper/]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLDeobfTweaker
[18:20:48] [main/DEBUG] [FML/]: Loaded 195 rules from AccessTransformer config file forge_at.cfg
[18:20:48] [main/DEBUG] [FML/]: Loaded 2 rules from AccessTransformer mod jar file C:\Users\IAN\AppData\Roaming\.minecraft\mods\worldedit-forge-mc1.10.2-6.1.4-SNAPSHOT-dist (1).jar!META-INF/worldedit_at.cfg

[18:20:48] [main/DEBUG] [FML/]: Validating minecraft
[18:20:48] [main/DEBUG] [FML/]: Minecraft validated, launching...
[18:20:48] [main/INFO] [LaunchWrapper/]: Loading tweak class name net.minecraftforge.fml.common.launcher.TerminalTweaker
[18:20:48] [main/INFO] [LaunchWrapper/]: Calling tweak class net.minecraftforge.fml.common.launcher.TerminalTweaker
[18:20:48] [main/INFO] [STDOUT/]: [optifine.OptiFineForgeTweaker:dbg:56]: OptiFineForgeTweaker: getLaunchArguments
[18:20:48] [main/INFO] [LaunchWrapper/]: Launching wrapped minecraft {net.minecraft.client.main.Main}
[18:20:49] [Client thread/INFO] [STDERR/]: [optifine.OptiFineClassTransformer:getOptiFineResourcePatched:236]: java.io.IOException: MD5 not matching, name: oj.class, saved: c1c0533e956f4917ba6400b4fdee557f, patched: f693ced12d639561a4066d26da122022
[18:20:49] [Client thread/INFO] [STDERR/]: [optifine.OptiFineClassTransformer:getOptiFineResourcePatched:236]:    at optifine.OptiFineClassTransformer.getOptiFineResourcePatched(OptiFineClassTransformer.java:229)
[18:20:49] [Client thread/INFO] [STDERR/]: [optifine.OptiFineClassTransformer:getOptiFineResourcePatched:236]:    at optifine.OptiFineClassTransformer.getOptiFineResource(OptiFineClassTransformer.java:153)
[18:20:49] [Client thread/INFO] [STDERR/]: [optifine.OptiFineClassTransformer:getOptiFineResourcePatched:236]:    at optifine.OptiFineClassTransformer.transform(OptiFineClassTransformer.java:117)
[18:20:49] [Client thread/INFO] [STDERR/]: [optifine.OptiFineClassTransformer:getOptiFineResourcePatched:236]:    at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279)
[18:20:49] [Client thread/INFO] [STDERR/]: [optifine.OptiFineClassTransformer:getOptiFineResourcePatched:236]:    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176)
[18:20:49] [Client thread/INFO] [STDERR/]: [optifine.OptiFineClassTransformer:getOptiFineResourcePatched:236]:    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
[18:20:49] [Client thread/INFO] [STDERR/]: [optifine.OptiFineClassTransformer:getOptiFineResourcePatched:236]:    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
[18:20:49] [Client thread/INFO] [STDERR/]: [optifine.OptiFineClassTransformer:getOptiFineResourcePatched:236]:    at net.minecraft.client.Minecraft.<init>(Minecraft.java:273)
[18:20:49] [Client thread/INFO] [STDERR/]: [optifine.OptiFineClassTransformer:getOptiFineResourcePatched:236]:    at net.minecraft.client.main.Main.main(SourceFile:124)
[18:20:49] [Client thread/INFO] [STDERR/]: [optifine.OptiFineClassTransformer:getOptiFineResourcePatched:236]:    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[18:20:49] [Client thread/INFO] [STDERR/]: [optifine.OptiFineClassTransformer:getOptiFineResourcePatched:236]:    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
[18:20:49] [Client thread/INFO] [STDERR/]: [optifine.OptiFineClassTransformer:getOptiFineResourcePatched:236]:    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[18:20:49] [Client thread/INFO] [STDERR/]: [optifine.OptiFineClassTransformer:getOptiFineResourcePatched:236]:    at java.lang.reflect.Method.invoke(Method.java:483)
[18:20:49] [Client thread/INFO] [STDERR/]: [optifine.OptiFineClassTransformer:getOptiFineResourcePatched:236]:    at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
[18:20:49] [Client thread/INFO] [STDERR/]: [optifine.OptiFineClassTransformer:getOptiFineResourcePatched:236]:    at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
[18:20:51] [Client thread/DEBUG] [FML/]: Creating vanilla freeze snapshot
[18:20:51] [Client thread/DEBUG] [FML/]: Vanilla freeze snapshot created
[18:20:53] [Client thread/DEBUG] [FML/]: Bar Finished: Loading Resource - LanguageManager took 0.002s
[18:20:53] [Client thread/INFO] [STDOUT/]: [net.minecraft.init.Bootstrap:func_179870_a:523]: ---- Minecraft Crash Report ----

WARNING: coremods are present:
Contact their authors BEFORE contacting forge

// Don't be sad. I'll do better next time, I promise!

Time: 4/4/17 6:20 PM
Description: Initializing game

java.lang.VerifyError: Bad return type
Exception Details:
Location:
Config.getDefiningResourcePack(Lnet/minecraft/network/datasync/EntityDataManager;)Lnet/minecraft/client/renderer/entity/layers/LayerDeadmau5Head; @48: areturn
Reason:
Type 'net/minecraft/client/renderer/entity/RenderWitherSkeleton' (current frame, stack[0]) is not assignable to 'net/minecraft/client/renderer/entity/layers/LayerDeadmau5Head' (from method signature)
Current Frame:
bci: @48
flags: { }
locals: { 'net/minecraft/network/datasync/EntityDataManager', '[Lnet/minecraft/client/renderer/entity/layers/LayerDeadmau5Head;' }
stack: { 'net/minecraft/client/renderer/entity/RenderWitherSkeleton' }
Bytecode:
0x0000000: b803 4b4c 2bbe 0464 3d1c 9b00 192b 1c32
0x0000010: 4e2d 2ab9 0375 0200 9900 052d b084 02ff
0x0000020: a7ff e9b8 034f 2ab6 0376 9900 07b8 034f
0x0000030: b001 b0
Stackmap Table:
append_frame(@9,Object[#830],Integer)
same_frame(@29)
chop_frame(@35,1)
same_frame(@49)

   at java.lang.Class.getDeclaredFields0(Native Method)
   at java.lang.Class.privateGetDeclaredFields(Class.java:2575)
   at java.lang.Class.getField0(Class.java:2967)
   at java.lang.Class.getField(Class.java:1693)
   at net.minecraftforge.fml.client.FMLClientHandler.detectOptifine(FMLClientHandler.java:309)
   at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:216)
   at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:440)
   at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:352)
   at net.minecraft.client.main.Main.main(SourceFile:124)
   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:483)
   at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
   at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

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

-- Head --
Thread: Client thread
Stacktrace:
   at java.lang.Class.getDeclaredFields0(Native Method)
   at java.lang.Class.privateGetDeclaredFields(Class.java:2575)
   at java.lang.Class.getField0(Class.java:2967)
   at java.lang.Class.getField(Class.java:1693)
   at net.minecraftforge.fml.client.FMLClientHandler.detectOptifine(FMLClientHandler.java:309)
   at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:216)
   at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:440)

-- Initialization --
Details:
Stacktrace:
   at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:352)
   at net.minecraft.client.main.Main.main(SourceFile:124)
   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:483)
   at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
   at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
   Minecraft Version: 1.11.2
   Operating System: Windows 10 (amd64) version 10.0
   Java Version: 1.8.0_25, Oracle Corporation
   Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
   Memory: 90443952 bytes (86 MB) / 255066112 bytes (243 MB) up to 1060372480 bytes (1011 MB)
   JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
   IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
   FML:
   Loaded coremods (and transformers):
   Launched Version: 1.11.2-forge1.11.2-13.20.0.2259
   LWJGL: 2.9.4
   OpenGL: GeForce GT 620/PCIe/SSE2 GL version 4.5.0 NVIDIA 375.63, NVIDIA Corporation
   GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

   Using VBOs: Yes
   Is Modded: Definitely; Client brand changed to 'fml,forge'
   Type: Client (map_client.txt)
   Resource Packs: OR Textures - V. 2.3.0 (7).zip (incompatible)
   Current Language: ~~ERROR~~ NullPointerException: null
   Profiler Position: N/A (disabled)
   CPU: 8x Intel(R) Core(TM) i7-4770S CPU @ 3.10GHz
[18:20:53] [Client thread/INFO] [STDOUT/]: [net.minecraft.init.Bootstrap:func_179870_a:523]: #@!@# Game crashed! Crash report saved to: #@!@# C:\Users\IAN\AppData\Roaming\.minecraft\crash-reports\crash-2017-04-04_18.20.53-client.txt

IGuy43 · April 4, 2017

I believe that is it, if not, please let me know how to retrieve said information.

IGuy43 · April 4, 2017

By the way, I also may have downloaded an unofficial version of OptiFine. I had troubles downloading the files from the original site; I reached the downloads page and passed the AdFly page, but nothing ever downloaded, and I was instead redirected to the website. I also do not know how to address this issue.

IGuy43 · April 5, 2017

13 hours ago, diesieben07 said:

optifine.net has a Mirror link for every download.

I tried it and nothing downloads. It just sends me to this page:

Edited April 5, 2017 by IGuy43

IGuy43 · April 6, 2017

On 4/5/2017 at 4:25 PM, diesieben07 said:

Click the download link in the middle of the page...

I have now saved my worlds, but completely uninstalled and reinstalled minecraft, deleting all files and data with the exception of my world saves. I can enter the game's main menu, but once i select a world/create a new one, the game sits at this loading screen:

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Minecraft Crashes Upon Every Launch

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