BasedGabe

Yup. I'm an idiot. It works without Optifine as it's not supported with Forge in this version. I'm really sorry for my mistake.

Forge version: forge-1.15.2-31.1.62 Minecraft version: 1.52.2 PC Specs: GTX 1070 Gigabyte i7 4790K 16GB Ram Kingston SSD main hard drive Windows 10 So, first the forge startup windows comes up with the memory info and heap size etc. But after that when trying to start up Minecraft this message comes up in a text box: The game crashed whilst initializing game Error: java.lang.NoClassDefFoundError: Could not initialize class net.minecraft.util.registry.Registry So, without loading any mods or with optifine and xaeros minimap I get the same error message. Then after checking the log, it says this: The error log: ---- Minecraft Crash Report ---- // I let you down. Sorry Time: 4/28/20 9:22 PM Description: Initializing game java.lang.NoClassDefFoundError: Could not initialize class net.minecraft.util.registry.Registry at net.optifine.util.BlockUtils.getBlock(BlockUtils.java:163) ~[?:?] {re:classloading} at net.optifine.config.ConnectedParser.parseBlockPart(ConnectedParser.java:254) ~[?:?] {re:classloading} at net.optifine.config.ConnectedParser.parseMatchBlock(ConnectedParser.java:180) ~[?:?] {re:classloading} at net.optifine.config.ConnectedParser.parseMatchBlocks(ConnectedParser.java:106) ~[?:?] {re:classloading} at net.optifine.shaders.BlockAliases.loadBlockAliases(BlockAliases.java:277) ~[?:?] {re:classloading} at net.optifine.shaders.BlockAliases.update(BlockAliases.java:184) ~[?:?] {re:classloading} at net.optifine.shaders.Shaders.loadShaderPackProperties(Shaders.java:1098) ~[?:?] {re:classloading} at net.optifine.shaders.Shaders.loadShaderPack(Shaders.java:962) ~[?:?] {re:classloading} at net.optifine.shaders.Shaders.loadConfig(Shaders.java:734) ~[?:?] {re:classloading} at net.optifine.shaders.Shaders.startup(Shaders.java:2070) ~[?:?] {re:classloading} at net.optifine.Config.initDisplay(Config.java:213) ~[?:?] {re:classloading} at com.mojang.blaze3d.platform.GlStateManager.func_227666_a_(GlStateManager.java:383) ~[?:?] {re:classloading,xf:OptiFine:default} at com.mojang.blaze3d.platform.GLX._init(GLX.java:151) ~[?:?] {re:classloading,xf:OptiFine:default} at com.mojang.blaze3d.systems.RenderSystem.initRenderer(SourceFile:1001) ~[?:?] {re:classloading} at net.minecraft.client.Minecraft.<init>(Minecraft.java:388) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A} at net.minecraft.client.main.Main.main(SourceFile:166) [?:?] {re:classloading} at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_51] {} at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_51] {} at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_51] {} at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_51] {} at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:56) [forge-1.15.2-31.1.62.jar:31.1] {} at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$409/1079190991.call(Unknown Source) [forge-1.15.2-31.1.62.jar:31.1] {} at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-5.1.0.jar:?] {} at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-5.1.0.jar:?] {} at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-5.1.0.jar:?] {} at cpw.mods.modlauncher.Launcher.run(Launcher.java:81) [modlauncher-5.1.0.jar:?] {} at cpw.mods.modlauncher.Launcher.main(Launcher.java:65) [modlauncher-5.1.0.jar:?] {} A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- Head -- Thread: Render thread Stacktrace: at net.optifine.util.BlockUtils.getBlock(BlockUtils.java:163) at net.optifine.config.ConnectedParser.parseBlockPart(ConnectedParser.java:254) at net.optifine.config.ConnectedParser.parseMatchBlock(ConnectedParser.java:180) at net.optifine.config.ConnectedParser.parseMatchBlocks(ConnectedParser.java:106) at net.optifine.shaders.BlockAliases.loadBlockAliases(BlockAliases.java:277) at net.optifine.shaders.BlockAliases.update(BlockAliases.java:184) at net.optifine.shaders.Shaders.loadShaderPackProperties(Shaders.java:1098) at net.optifine.shaders.Shaders.loadShaderPack(Shaders.java:962) at net.optifine.shaders.Shaders.loadConfig(Shaders.java:734) at net.optifine.shaders.Shaders.startup(Shaders.java:2070) at net.optifine.Config.initDisplay(Config.java:213) at com.mojang.blaze3d.platform.GlStateManager.func_227666_a_(GlStateManager.java:383) at com.mojang.blaze3d.platform.GLX._init(GLX.java:151) at com.mojang.blaze3d.systems.RenderSystem.initRenderer(SourceFile:1001) at net.minecraft.client.Minecraft.<init>(Minecraft.java:388) -- Initialization -- Details: Stacktrace: at net.minecraft.client.main.Main.main(SourceFile:166) 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.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:56) at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$409/1079190991.call(Unknown Source) at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) at cpw.mods.modlauncher.Launcher.run(Launcher.java:81) at cpw.mods.modlauncher.Launcher.main(Launcher.java:65) -- System Details -- Details: Minecraft Version: 1.15.2 Minecraft Version ID: 1.15.2 Operating System: Windows 10 (amd64) version 10.0 Java Version: 1.8.0_51, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 2180201192 bytes (2079 MB) / 3657433088 bytes (3488 MB) up to 4294967296 bytes (4096 MB) CPUs: 8 JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx4G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M Launched Version: 1.15.2-forge-31.1.62 Backend library: LWJGL version 3.2.2 build 10 Backend API: GeForce GTX 1070/PCIe/SSE2 GL version 4.6.0 NVIDIA 445.75, NVIDIA Corporation GL Caps: Using VBOs: Yes Is Modded: Definitely; Client brand changed to 'forge' Type: Client (map_client.txt) CPU: <unknown> OptiFine Version: OptiFine_1.15.2_HD_U_G1_pre13 OptiFine Build: 20200401-232147 Render Distance Chunks: 8 Mipmaps: 4 Anisotropic Filtering: 1 Antialiasing: 0 Multitexture: false Shaders: BSL_v7.1.04.1 OpenGlVersion: 4.6.0 NVIDIA 445.75 OpenGlRenderer: GeForce GTX 1070/PCIe/SSE2 OpenGlVendor: NVIDIA Corporation CpuCount: 8