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    Apr 10, 2020
    TheSone97 posted a message on HELP! mekanism:basic_fluid_tank

    When I try to start my modded game I get:

    "The game crashed whilst initializing game
    Error: java.lang.NullPointerException: Registry Object not present: mekanism:basic_fluid_tank"

    Any idea about how to fix it? I have tried updating to the newest version of mekanism, and removing all other mods, but I still get the error.

    Complete crash report in spoiler.

    ---- Minecraft Crash Report ----
    // I bet Cylons wouldn't have this problem.

    Time: 09.04.20 21:09
    Description: Initializing game

    java.lang.ClassFormatError: Duplicate method name&signature in class file net/minecraft/client/renderer/Matrix4f
    at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.8.0_51] {}
    at java.lang.ClassLoader.defineClass(ClassLoader.java:760) ~[?:1.8.0_51] {}
    at java.lang.ClassLoader.defineClass(ClassLoader.java:642) ~[?:1.8.0_51] {}
    at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:127) ~[modlauncher-5.0.0-milestone.4.jar:?] {}
    at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:96) ~[modlauncher-5.0.0-milestone.4.jar:?] {}
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_51] {}
    at net.minecraftforge.client.ForgeHooksClient.<clinit>(ForgeHooksClient.java:399) ~[?:?] {re:classloading}
    at net.minecraft.client.Minecraft.<init>(Minecraft.java:325) [?:?] {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-1.15.2-31.1.39.jar:31.1] {}
    at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$406/1111700510.call(Unknown Source) [forge-1.15.2-31.1.39.jar:31.1] {}
    at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-5.0.0-milestone.4.jar:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-5.0.0-milestone.4.jar:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-5.0.0-milestone.4.jar:?] {}
    at cpw.mods.modlauncher.Launcher.run(Launcher.java:81) [modlauncher-5.0.0-milestone.4.jar:?] {}
    at cpw.mods.modlauncher.Launcher.main(Launcher.java:65) [modlauncher-5.0.0-milestone.4.jar:?] {}

     

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

    -- Head --
    Thread: Render thread
    Stacktrace:
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:642)
    at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:127)
    at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:96)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at net.minecraftforge.client.ForgeHooksClient.<clinit>(ForgeHooksClient.java:399)
    at net.minecraft.client.Minecraft.<init>(Minecraft.java:325)

    -- 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$406/1111700510.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: 949067784 bytes (905 MB) / 1308622848 bytes (1248 MB) up to 2147483648 bytes (2048 MB)
    CPUs: 4
    JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
    Launched Version: 1.15.2-forge-31.1.39
    Backend library: LWJGL version 3.2.2 build 10
    Backend API: NO CONTEXT
    GL Caps:
    Using VBOs: Yes
    Is Modded: Definitely; Client brand changed to 'forge'
    Type: Client (map_client.txt)
    CPU: <unknown>

     

    Posted in: Support
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