Minecraft Forums

OK, here is the error report;

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

-- Head --
Stacktrace:
at net.minecraftforge.fml.common.network.FMLIndexedMessageToMessageCodec.<init>(FMLIndexedMessageToMessageCodec.java:23)
at net.minecraftforge.fml.common.network.internal.FMLRuntimeCodec.<init>(FMLRuntimeCodec.java:15)
at net.minecraftforge.fml.common.network.internal.FMLNetworkHandler.registerChannel(FMLNetworkHandler.java:172)
at net.minecraftforge.fml.common.FMLContainer.modConstruction(FMLContainer.java:82)
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 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 net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:211)
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:189)
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 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 net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:118)
at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:512)
at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:208)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:417)

-- Initialization --
Details:
Stacktrace:
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:329)
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: 1.8.9
Operating System: Windows 8.1 (amd64) version 6.3
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 494997432 bytes (472 MB) / 893386752 bytes (852 MB) up to 1908932608 bytes (1820 MB)
JVM Flags: 4 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -XX:MaxPermSize=128m -Xmx2048M -Xms256M
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP 9.19 Powered by Forge 11.15.1.1722 4 mods loaded, 4 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{9.19} [Minecraft Coder Pack] (minecraft.jar)
U FML{8.0.99.99} [Forge Mod Loader] (forge-1.8.9-11.15.1.1722.jar)
U Forge{11.15.1.1722} [Minecraft Forge] (forge-1.8.9-11.15.1.1722.jar)
U pixelmon{4.2.5} [Pixelmon] (Pixelmon-1.8.9-4.2.5-universal.jar)
Loaded coremods (and transformers):
Java8CheckerCoremod (Pixelmon-1.8.9-4.2.5-universal.jar)

GL info: ' Vendor: 'ATI Technologies Inc.' Version: '4.3.12798 Compatibility Profile Context 13.351.1105.1001' Renderer: 'AMD Radeon(TM) R5 Graphics'
Launched Version: 1.8.9-forge1.8.9-11.15.1.1722
LWJGL: 2.9.4
OpenGL: AMD Radeon(TM) R5 Graphics GL version 4.3.12798 Compatibility Profile Context 13.351.1105.1001, ATI Technologies Inc.
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: No
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs:
Current Language: English (US)
Profiler Position: N/A (disabled)
CPU: 4x AMD A8-6410 APU with AMD Radeon R5 Graphics
[10:21:33] [Client thread/INFO] [STDOUT]: [net.minecraft.init.Bootstrap:func_179870_a:529]: #@[email protected]# Game crashed! Crash report saved to: #@[email protected]# C:\Users\rye3317\AppData\Roaming\.pixelmon\Littlepurplepony\crash-reports\crash-2016-05-08_10.21.30-client.txt

Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=128m; support was removed in 8.0

javaw.exe -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -XX:MaxPermSize=128m -Xmx2048M -Xms256M -Djava.library.path="C:\Users\rye3317\AppData\Roaming\.pixelmon\Littlepurplepony\bin\natives" -Dminecraft.applet.TargetDirectory="C:\Users\rye3317\AppData\Roaming\.pixelmon\Littlepurplepony" -cp "C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\net\minecraftforge\forge\1.8.9-11.15.1.1722\forge-1.8.9-11.15.1.1722.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\io\netty\netty-all\4.0.23.Final\netty-all-4.0.23.Final.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\net\minecraft\launchwrapper\1.12\launchwrapper-1.12.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\org\ow2\asm\asm-all\5.0.3\asm-all-5.0.3.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\com\typesafe\akka\akka-actor_2.11\2.3.3\akka-actor_2.11-2.3.3.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\com\typesafe\config\1.2.1\config-1.2.1.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\org\scala-lang\scala-actors-migration_2.11\1.1.0\scala-actors-migration_2.11-1.1.0.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\org\scala-lang\scala-compiler\2.11.1\scala-compiler-2.11.1.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\org\scala-lang\plugins\scala-continuations-library_2.11\1.0.2\scala-continuations-library_2.11-1.0.2.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\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\rye3317\AppData\Roaming\.pixelmon\cache\org\scala-lang\scala-library\2.11.1\scala-library-2.11.1.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\org\scala-lang\scala-parser-combinators_2.11\1.0.1\scala-parser-combinators_2.11-1.0.1.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\org\scala-lang\scala-reflect\2.11.1\scala-reflect-2.11.1.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\org\scala-lang\scala-swing_2.11\1.0.1\scala-swing_2.11-1.0.1.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\org\scala-lang\scala-xml_2.11\1.0.2\scala-xml_2.11-1.0.2.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\lzma\lzma\0.0.1\lzma-0.0.1.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\net\sf\jopt-simple\jopt-simple\4.6\jopt-simple-4.6.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\java3d\vecmath\1.5.2\vecmath-1.5.2.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\net\sf\trove4j\trove4j\3.0.3\trove4j-3.0.3.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\oshi-project\oshi-core\1.1\oshi-core-1.1.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\net\java\dev\jna\jna\3.4.0\jna-3.4.0.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\net\java\dev\jna\platform\3.4.0\platform-3.4.0.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\com\ibm\icu\icu4j-core-mojang\51.2\icu4j-core-mojang-51.2.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\com\paulscode\codecwav\20101023\codecwav-20101023.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\com\google\guava\guava\17.0\guava-17.0.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\org\apache\commons\commons-lang3\3.3.2\commons-lang3-3.3.2.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\commons-io\commons-io\2.4\commons-io-2.4.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\commons-codec\commons-codec\1.9\commons-codec-1.9.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\com\google\code\gson\gson\2.2.4\gson-2.2.4.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\com\mojang\authlib\1.5.21\authlib-1.5.21.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\com\mojang\realms\1.7.59\realms-1.7.59.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\org\apache\commons\commons-compress\1.8.1\commons-compress-1.8.1.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\org\apache\httpcomponents\httpclient\4.3.3\httpclient-4.3.3.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\commons-logging\commons-logging\1.1.3\commons-logging-1.1.3.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\org\apache\httpcomponents\httpcore\4.3.2\httpcore-4.3.2.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\org\apache\logging\log4j\log4j-api\2.0-beta9\log4j-api-2.0-beta9.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\org\apache\logging\log4j\log4j-core\2.0-beta9\log4j-core-2.0-beta9.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\org\lwjgl\lwjgl\lwjgl\2.9.4-nightly-20150209\lwjgl-2.9.4-nightly-20150209.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\org\lwjgl\lwjgl\lwjgl_util\2.9.4-nightly-20150209\lwjgl_util-2.9.4-nightly-20150209.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\cache\tv\twitch\twitch\6.5\twitch-6.5.jar";"C:\Users\rye3317\AppData\Roaming\.pixelmon\Littlepurplepony\bin\minecraft.jar" net.minecraft.launchwrapper.Launch --username littlepurplepony --version 1.8.9-forge1.8.9-11.15.1.1722 --gameDir "C:\Users\rye3317\AppData\Roaming\.pixelmon\Littlepurplepony" --assetsDir "C:\Users\rye3317\AppData\Roaming\.pixelmon\assets" --assetIndex 1.8 --uuid c975ef03689b4a78b1a03d083af556ba --accessToken b0e2b145f2b1427aaee3db0994f51ff7 --userProperties {} --userType mojang --tweakClass net.minecraftforge.fml.common.launcher.FMLTweaker
[11:47:55] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker
[11:47:56] [main/INFO] [LaunchWrapper]: Using primary tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker
[11:47:56] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLTweaker
[11:47:57] [main/INFO] [FML]: Forge Mod Loader version 11.15.1.1722 for Minecraft 1.8.9 loading
[11:47:57] [main/INFO] [FML]: Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_25, running on Windows 8.1:amd64:6.3, installed at C:\Program Files (x86)\Minecraft\runtime\jre-x64\1.8.0_25
[11:48:01] [main/WARN] [FML]: The coremod chylex.javacheck.Java8CheckerCoremod does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[11:48:01] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
[11:48:01] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLDeobfTweaker
[11:48:01] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
[11:48:01] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker
[11:48:01] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
[11:48:19] [main/INFO] [FML]: Found valid fingerprint for Minecraft. Certificate fingerprint cd99959656f753dc28d863b46769f7f8fbaefcfc
[11:48:19] [main/ERROR] [FML]: FML appears to be missing any signature data. This is not a good thing
[11:48:19] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
[11:48:19] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper
[11:48:21] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLDeobfTweaker
[11:48:30] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.TerminalTweaker
[11:48:30] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.TerminalTweaker
[11:48:30] [main/INFO] [LaunchWrapper]: Launching wrapped minecraft {net.minecraft.client.main.Main}
[11:48:39] [Client thread/INFO]: Setting user: littlepurplepony
[11:48:57] [Client thread/INFO]: LWJGL Version: 2.9.4
[11:49:00] [Client thread/WARN] [FML]: =============================================================
[11:49:00] [Client thread/WARN] [FML]: MOD HAS DIRECT REFERENCE System.exit() THIS IS NOT ALLOWED REROUTING TO FML!
[11:49:00] [Client thread/WARN] [FML]: Offendor: com/sun/jna/Native.main([Ljava/lang/String;)V
[11:49:00] [Client thread/WARN] [FML]: Use FMLCommonHandler.exitJava instead
[11:49:00] [Client thread/WARN] [FML]: =============================================================
[11:49:04] [Client thread/INFO] [STDOUT]: [net.minecraftforge.fml.client.SplashProgress:start:246]: ---- Minecraft Crash Report ----

WARNING: coremods are present:
Java8CheckerCoremod (Pixelmon-1.8.9-4.2.5-universal.jar)
Contact their authors BEFORE contacting forge

// I just don't know what went wrong

Time: 5/8/16 11:49 AM
Description: Loading screen debug info

This is just a prompt for computer specs to be printed. THIS IS NOT A ERROR

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

-- System Details --
Details:
Minecraft Version: 1.8.9
Operating System: Windows 8.1 (amd64) version 6.3
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 549368760 bytes (523 MB) / 835715072 bytes (797 MB) up to 1908932608 bytes (1820 MB)
JVM Flags: 4 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -XX:MaxPermSize=128m -Xmx2048M -Xms256M
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML:
Loaded coremods (and transformers):
Java8CheckerCoremod (Pixelmon-1.8.9-4.2.5-universal.jar)

GL info: ' Vendor: 'ATI Technologies Inc.' Version: '4.3.12798 Compatibility Profile Context 13.351.1105.1001' Renderer: 'AMD Radeon(TM) R5 Graphics'
[11:49:05] [Client thread/INFO] [FML]: MinecraftForge v11.15.1.1722 Initialized
[11:49:05] [Client thread/INFO] [FML]: Replaced 204 ore recipies
[11:49:07] [Client thread/INFO] [FML]: Found 0 mods from the command line. Injecting into mod discoverer
[11:49:07] [Client thread/INFO] [FML]: Searching C:\Users\rye3317\AppData\Roaming\.pixelmon\Littlepurplepony\mods for mods
[11:49:37] [Client thread/INFO] [FML]: Forge Mod Loader has identified 4 mods to load
[11:49:57] [Client thread/INFO] [FML]: Attempting connection with missing mods [mcp, FML, Forge, pixelmon] at CLIENT
[11:49:57] [Client thread/INFO] [FML]: Attempting connection with missing mods [mcp, FML, Forge, pixelmon] at SERVER
[11:50:06] [Client thread/INFO]: Reloading ResourceManager: Default, FMLFileResourcePack:Forge Mod Loader, FMLFileResourcePack:Minecraft Forge, FMLFileResourcePack:Pixelmon
[11:50:09] [Client thread/INFO] [STDOUT]: [net.minecraft.init.Bootstrap:func_179870_a:529]: ---- Minecraft Crash Report ----

WARNING: coremods are present:
Java8CheckerCoremod (Pixelmon-1.8.9-4.2.5-universal.jar)
Contact their authors BEFORE contacting forge

// Oh - I know what I did wrong!

Time: 5/8/16 11:50 AM
Description: Initializing game

java.lang.NoClassDefFoundError: gnu/trove/map/hash/TByteObjectHashMap
at net.minecraftforge.fml.common.network.FMLIndexedMessageToMessageCodec.<init>(FMLIndexedMessageToMessageCodec.java:23)
at net.minecraftforge.fml.common.network.internal.FMLRuntimeCodec.<init>(FMLRuntimeCodec.java:15)
at net.minecraftforge.fml.common.network.internal.FMLNetworkHandler.registerChannel(FMLNetworkHandler.java:172)
at net.minecraftforge.fml.common.FMLContainer.modConstruction(FMLContainer.java:82)
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 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 net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:211)
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:189)
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 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 net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:118)
at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:512)
at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:208)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:417)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:329)
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)
Caused by: java.lang.ClassNotFoundException: gnu.trove.map.hash.TByteObjectHashMap
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)
... 36 more
Caused by: java.lang.NullPointerException
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
... 38 more

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

-- Head --
Stacktrace:
at net.minecraftforge.fml.common.network.FMLIndexedMessageToMessageCodec.<init>(FMLIndexedMessageToMessageCodec.java:23)
at net.minecraftforge.fml.common.network.internal.FMLRuntimeCodec.<init>(FMLRuntimeCodec.java:15)
at net.minecraftforge.fml.common.network.internal.FMLNetworkHandler.registerChannel(FMLNetworkHandler.java:172)
at net.minecraftforge.fml.common.FMLContainer.modConstruction(FMLContainer.java:82)
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 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 net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:211)
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:189)
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 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 net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:118)
at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:512)
at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:208)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:417)

-- Initialization --
Details:
Stacktrace:
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:329)
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: 1.8.9
Operating System: Windows 8.1 (amd64) version 6.3
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 495704344 bytes (472 MB) / 898629632 bytes (857 MB) up to 1908932608 bytes (1820 MB)
JVM Flags: 4 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -XX:MaxPermSize=128m -Xmx2048M -Xms256M
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP 9.19 Powered by Forge 11.15.1.1722 4 mods loaded, 4 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{9.19} [Minecraft Coder Pack] (minecraft.jar)
U FML{8.0.99.99} [Forge Mod Loader] (forge-1.8.9-11.15.1.1722.jar)
U Forge{11.15.1.1722} [Minecraft Forge] (forge-1.8.9-11.15.1.1722.jar)
U pixelmon{4.2.5} [Pixelmon] (Pixelmon-1.8.9-4.2.5-universal.jar)
Loaded coremods (and transformers):
Java8CheckerCoremod (Pixelmon-1.8.9-4.2.5-universal.jar)

GL info: ' Vendor: 'ATI Technologies Inc.' Version: '4.3.12798 Compatibility Profile Context 13.351.1105.1001' Renderer: 'AMD Radeon(TM) R5 Graphics'
Launched Version: 1.8.9-forge1.8.9-11.15.1.1722
LWJGL: 2.9.4
OpenGL: AMD Radeon(TM) R5 Graphics GL version 4.3.12798 Compatibility Profile Context 13.351.1105.1001, ATI Technologies Inc.
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: No
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs:
Current Language: English (US)
Profiler Position: N/A (disabled)
CPU: 4x AMD A8-6410 APU with AMD Radeon R5 Graphics
[11:50:11] [Client thread/INFO] [STDOUT]: [net.minecraft.init.Bootstrap:func_179870_a:529]: #@[email protected]# Game crashed! Crash report saved to: #@[email protected]# C:\Users\rye3317\AppData\Roaming\.pixelmon\Littlepurplepony\crash-reports\crash-2016-05-08_11.50.09-client.txt

Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=128m; support was removed in 8.0

Thanks, wasn't sure that would help originally!