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    • 1.12 is no longer supported on this forum. Please update to a modern version of Minecraft to receive support.
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    • ---- Minecraft Crash Report ---- WARNING: coremods are present: Contact their authors BEFORE contacting forge // Don't be sad, have a hug! <3 Time: 4/6/20 5:34 PM Description: Initializing game java.lang.NoClassDefFoundError: net/minecraft/client/gui/GuiScreen     at java.lang.ClassLoader.defineClass1(Native Method)     at java.lang.ClassLoader.defineClass(ClassLoader.java:760)     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)     at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)     at java.net.URLClassLoader.access$100(URLClassLoader.java:73)     at java.net.URLClassLoader$1.run(URLClassLoader.java:368)     at java.net.URLClassLoader$1.run(URLClassLoader.java:362)     at java.security.AccessController.doPrivileged(Native Method)     at java.net.URLClassLoader.findClass(URLClassLoader.java:361)     at java.lang.ClassLoader.loadClass(ClassLoader.java:424)     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)     at java.lang.ClassLoader.loadClass(ClassLoader.java:357)     at org.apache.logging.log4j.core.impl.ThrowableProxy.loadClass(ThrowableProxy.java:459)     at org.apache.logging.log4j.core.impl.ThrowableProxy.resolvePackageData(ThrowableProxy.java:395)     at org.apache.logging.log4j.core.impl.ThrowableProxy.<init>(ThrowableProxy.java:97)     at org.apache.logging.log4j.core.impl.Log4jLogEvent.<init>(Log4jLogEvent.java:114)     at org.apache.logging.log4j.core.impl.Log4jLogEvent.<init>(Log4jLogEvent.java:90)     at org.apache.logging.log4j.core.impl.DefaultLogEventFactory.createEvent(DefaultLogEventFactory.java:49)     at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:365)     at org.apache.logging.log4j.core.Logger.log(Logger.java:110)     at org.apache.logging.log4j.spi.AbstractLogger.log(AbstractLogger.java:1448)     at net.minecraftforge.fml.relauncher.FMLRelaunchLog.log(FMLRelaunchLog.java:83)     at net.minecraftforge.fml.common.FMLLog.log(FMLLog.java:40)     at net.minecraftforge.fml.common.LoadController.transition(LoadController.java:138)     at net.minecraftforge.fml.common.Loader.preinitializeMods(Loader.java:559)     at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:243)     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:497)     at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)     at net.minecraft.launchwrapper.Launch.main(Launch.java:28) Caused by: java.lang.ClassNotFoundException: net.minecraft.client.gui.GuiScreen     at java.net.URLClassLoader.findClass(URLClassLoader.java:381)     at java.lang.ClassLoader.loadClass(ClassLoader.java:424)     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)     at java.lang.ClassLoader.loadClass(ClassLoader.java:357)     ... 35 more A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- Head -- Stacktrace:     at java.lang.ClassLoader.defineClass1(Native Method)     at java.lang.ClassLoader.defineClass(ClassLoader.java:760)     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)     at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)     at java.net.URLClassLoader.access$100(URLClassLoader.java:73)     at java.net.URLClassLoader$1.run(URLClassLoader.java:368)     at java.net.URLClassLoader$1.run(URLClassLoader.java:362)     at java.security.AccessController.doPrivileged(Native Method)     at java.net.URLClassLoader.findClass(URLClassLoader.java:361)     at java.lang.ClassLoader.loadClass(ClassLoader.java:424)     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)     at java.lang.ClassLoader.loadClass(ClassLoader.java:357)     at org.apache.logging.log4j.core.impl.ThrowableProxy.loadClass(ThrowableProxy.java:459)     at org.apache.logging.log4j.core.impl.ThrowableProxy.resolvePackageData(ThrowableProxy.java:395)     at org.apache.logging.log4j.core.impl.ThrowableProxy.<init>(ThrowableProxy.java:97)     at org.apache.logging.log4j.core.impl.Log4jLogEvent.<init>(Log4jLogEvent.java:114)     at org.apache.logging.log4j.core.impl.Log4jLogEvent.<init>(Log4jLogEvent.java:90)     at org.apache.logging.log4j.core.impl.DefaultLogEventFactory.createEvent(DefaultLogEventFactory.java:49)     at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:365)     at org.apache.logging.log4j.core.Logger.log(Logger.java:110)     at org.apache.logging.log4j.spi.AbstractLogger.log(AbstractLogger.java:1448)     at net.minecraftforge.fml.relauncher.FMLRelaunchLog.log(FMLRelaunchLog.java:83)     at net.minecraftforge.fml.common.FMLLog.log(FMLLog.java:40)     at net.minecraftforge.fml.common.LoadController.transition(LoadController.java:138)     at net.minecraftforge.fml.common.Loader.preinitializeMods(Loader.java:559)     at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:243)     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:497)     at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)     at net.minecraft.launchwrapper.Launch.main(Launch.java:28) -- System Details -- Details:     ct.js modules: ~~ERROR~~ NullPointerException: null     Minecraft Version: 1.8.9     Operating System: Windows 10 (amd64) version 10.0     CPU: 8x Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz     Java Version: 1.8.0_51, Oracle Corporation     Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation     Memory: 280494328 bytes (267 MB) / 536870912 bytes (512 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     IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0     FML: MCP 9.19 Powered by Forge 11.15.1.1722 Optifine OptiFine_1.8.9_HD_U_H8 11 mods loaded, 11 mods active     States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored     UCH    mcp{9.19} [Minecraft Coder Pack] (minecraft.jar)      UCH    FML{8.0.99.99} [Forge Mod Loader] (forge-1.8.9-11.15.1.1722.jar)      UCH    Forge{11.15.1.1722} [Minecraft Forge] (forge-1.8.9-11.15.1.1722.jar)      UCE    ct.js{0.16.5-SNAPSHOT} [ChatTriggers] (ChatTriggers.jar)      UCH    autogg{2.0.4} [Auto GG] (AutoGG-2.0.4 (1.8.9).jar)      UCH    autotip{3.0} [Autotip] (Autotip-3.0 [1.8-1.12.2].jar)      UCH    ChromaHUD{3.0} [Chroma HUD] (ChromaHUD-3.0 (1.8.9).jar)      UCH    animations{6.7} [Orange's 1.7 Animations] (Orange's+1.7+Animations-6.7.jar)      UCH    LEVEL_HEAD{5.0} [Sk1er Level Head] (Sk1er Levelhead (1.8.9)-5.0.jar)      UCH    timechanger{1.0} [TimeChanger] (TimeChanger-1.0 (1.8.9).jar)      UCH    sk1er_fullscreen{1.0} [Sk1er Fullscreen] (Windowed Fullscreen-1.0 (1.8.9).jar)      Loaded coremods (and transformers):      GL info: ' Vendor: 'NVIDIA Corporation' Version: '4.6.0 NVIDIA 432.00' Renderer: 'GeForce GTX 1050/PCIe/SSE2'     Launched Version: 1.8.9-forge1.8.9-11.15.1.1722     LWJGL: 2.9.4     OpenGL: GeForce GTX 1050/PCIe/SSE2 GL version 4.6.0 NVIDIA 432.00, 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: No     Is Modded: Definitely; Client brand changed to 'fml,forge'     Type: Client (map_client.txt)     Resource Packs: §bE.zip     Current Language: English (US)     Profiler Position: N/A (disabled)     CPU: 8x Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz
    • 1.12.2 is no longer supported on this forum. Please update to a modern version of Minecraft to receive support. For more information read the LTS at the top of the page.
    • java.net.preferIPv4Stack=true Considering library net.minecraftforge:forge:1.12.2-14.23.5.2768: Not Downloading {Wrong Side} Considering library net.minecraft:launchwrapper:1.12: Not Downloading {Wrong Side} Considering library org.ow2.asm:asm-all:5.2 Considering library org.jline:jline:3.5.1: Not Downloading {Wrong Side} Considering library net.java.dev.jna:jna:4.4.0: Not Downloading {Wrong Side} Considering library com.typesafe.akka:akka-actor_2.11:2.3.3 Checking "/Users/faithstockdale/Library/Application Support/minecraft/libraries/com/typesafe/akka/akka-actor_2.11/2.3.3/akka-actor_2.11-2.3.3.jar" internal checksums     checksums.sha1 was not found, validation failed Downloading library com.typesafe.akka:akka-actor_2.11:2.3.3 Unpacking packed file akka-actor_2.11-2.3.3.jar.pack.xz   Signed   Checksum Length: 140942   Total Length:    2606968   Temp File:       /var/folders/4q/p9ym6tdj40zgblyxg0_s2tcc0000gn/T/art17988270506965575990.pack Exception in thread "main" java.lang.reflect.InvocationTargetException     at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)     at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)     at java.base/java.lang.reflect.Method.invoke(Method.java:564)     at net.minecraftforge.installer.Java6Gate.main(Java6Gate.java:48) Caused by: java.lang.NoClassDefFoundError: java/util/jar/Pack200     at net.minecraftforge.installer.DownloadUtils.unpackLibrary(DownloadUtils.java:253)     at net.minecraftforge.installer.DownloadUtils.downloadInstalledLibraries(DownloadUtils.java:89)     at net.minecraftforge.installer.ClientInstall.run(ClientInstall.java:131)     at net.minecraftforge.installer.InstallerAction.run(InstallerAction.java:43)     at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:406)     at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:168)     at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:54)     ... 5 more Caused by: java.lang.ClassNotFoundException: java.util.jar.Pack200     at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:602)     at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)     at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)     ... 12 more  
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