When I start Minecraft with mods, then this error appears but I have absolutely no idea what it means:
[
10:55:24] [main/DEBUG] [FML/]: Injecting tracing printstreams for STDOUT/STDERR.
[10:55:24] [main/INFO] [FML/]: Forge Mod Loader version 11.14.4.1577 for Minecraft 1.8 loading
[10:55:24] [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:\Users\Nathan\Documents\4Games\Minecraft\Minecraft Launcher\MCSource\runtime\jre-x64\1.8.0_25
[10:55:24] [main/DEBUG] [FML/]: Java classpath at launch is C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\net\minecraftforge\forge\1.8-11.14.4.1577\forge-1.8-11.14.4.1577.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\io\netty\netty-all\4.0.15.Final\netty-all-4.0.15.Final.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.12\launchwrapper-1.12.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-all\5.0.3\asm-all-5.0.3.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\com\typesafe\akka\akka-actor_2.11\2.3.3\akka-actor_2.11-2.3.3.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\com\typesafe\config\1.2.1\config-1.2.1.jar;C:\Users\Nathan\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\Nathan\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-compiler\2.11.1\scala-compiler-2.11.1.jar;C:\Users\Nathan\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\Nathan\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\Nathan\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-library\2.11.1\scala-library-2.11.1.jar;C:\Users\Nathan\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\Nathan\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-reflect\2.11.1\scala-reflect-2.11.1.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-swing_2.11\1.0.1\scala-swing_2.11-1.0.1.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-xml_2.11\1.0.2\scala-xml_2.11-1.0.2.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\lzma\lzma\0.0.1\lzma-0.0.1.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\java3d\vecmath\1.5.2\vecmath-1.5.2.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\net\sf\trove4j\trove4j\3.0.3\trove4j-3.0.3.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\com\ibm\icu\icu4j-core-mojang\51.2\icu4j-core-mojang-51.2.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.6\jopt-simple-4.6.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\io\netty\netty-all\4.0.15.Final\netty-all-4.0.15.Final.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\17.0\guava-17.0.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.3.2\commons-lang3-3.3.2.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\commons-codec\commons-codec\1.9\commons-codec-1.9.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.4\gson-2.2.4.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\1.5.21\authlib-1.5.21.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\com\mojang\realms\1.6.1\realms-1.6.1.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-compress\1.8.1\commons-compress-1.8.1.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpclient\4.3.3\httpclient-4.3.3.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\commons-logging\commons-logging\1.1.3\commons-logging-1.1.3.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpcore\4.3.2\httpcore-4.3.2.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-api\2.0-beta9\log4j-api-2.0-beta9.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-core\2.0-beta9\log4j-core-2.0-beta9.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.1\lwjgl-2.9.1.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.1\lwjgl_util-2.9.1.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch\6.5\twitch-6.5.jar;C:\Users\Nathan\AppData\Roaming\.minecraft\versions\1.8\1.8.jar
[10:55:24] [main/DEBUG] [FML/]: Java library path at launch is C:\Users\Nathan\AppData\Roaming\.minecraft\versions\1.8-Forge11.14.4.1577\1.8-Forge11.14.4.1577-natives-180312753642141
[10:55:24] [main/DEBUG] [FML/]: Enabling runtime deobfuscation
[10:55:24] [main/DEBUG] [FML/]: Instantiating coremod class FMLCorePlugin
[10:55:24] [main/DEBUG] [FML/]: Added access transformer class net.minecraftforge.fml.common.asm.transformers.AccessTransformer to enqueued access transformers
[10:55:24] [main/DEBUG] [FML/]: Enqueued coremod FMLCorePlugin
[10:55:24] [main/DEBUG] [FML/]: Instantiating coremod class FMLForgePlugin
[10:55:24] [main/DEBUG] [FML/]: Enqueued coremod FMLForgePlugin
[10:55:24] [main/DEBUG] [FML/]: All fundamental core mods are successfully located
[10:55:24] [main/DEBUG] [FML/]: Attempting to load commandline specified mods, relative to C:\Users\Nathan\AppData\Roaming\.minecraft
[10:55:24] [main/DEBUG] [FML/]: Discovering coremods
[10:55:24] [main/DEBUG] [FML/]: Examining for coremod candidacy 1.8-MB_Battlegear2-Bullseye-1.0.10.0.jar
[10:55:24] [main/TRACE] [FML/]: Found FMLCorePluginContainsFMLMod marker in 1.8-MB_Battlegear2-Bullseye-1.0.10.0.jar, it will be examined later for regular @Mod instances
[10:55:24] [main/DEBUG] [FML/]: Instantiating coremod class BattlegearLoadingPlugin
[10:55:24] [main/TRACE] [FML/]: coremod named Mine and Blade: Battlegear2 is loading
[10:55:24] [main/WARN] [FML/]: The coremod mods.battlegear2.coremod.BattlegearLoadingPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[10:55:24] [main/DEBUG] [FML/]: Added access transformer class mods.battlegear2.coremod.transformers.BattlegearAccessTransformer to enqueued access transformers
[10:55:24] [main/DEBUG] [FML/]: Enqueued coremod Mine and Blade: Battlegear2
[10:55:24] [main/DEBUG] [FML/]: Examining for coremod candidacy [1.8] SecurityCraft v1.8.0.jar
[10:55:24] [main/DEBUG] [FML/]: Not found coremod data in [1.8] SecurityCraft v1.8.0.jar
[10:55:24] [main/DEBUG] [FML/]: Examining for coremod candidacy [1.8]bspkrsCore-universal-7.01.jar
[10:55:24] [main/DEBUG] [FML/]: Not found coremod data in [1.8]bspkrsCore-universal-7.01.jar
[10:55:24] [main/DEBUG] [FML/]: Examining for coremod candidacy [1.8]FloatingRuins-universal-1.8.r01.jar
[10:55:24] [main/DEBUG] [FML/]: Not found coremod data in [1.8]FloatingRuins-universal-1.8.r01.jar
[10:55:24] [main/DEBUG] [FML/]: Examining for coremod candidacy [1.8]StartingInventory-universal-1.8.r01.jar
[10:55:24] [main/DEBUG] [FML/]: Not found coremod data in [1.8]StartingInventory-universal-1.8.r01.jar
[10:55:24] [main/DEBUG] [FML/]: Examining for coremod candidacy [1.8]Treecapitator-universal-2.0.5.jar
[10:55:24] [main/DEBUG] [FML/]: Not found coremod data in [1.8]Treecapitator-universal-2.0.5.jar
[10:55:24] [main/DEBUG] [FML/]: Examining for coremod candidacy [Forge 1.8] SpectralGuns 1.3.jar
[10:55:24] [main/DEBUG] [FML/]: Not found coremod data in [Forge 1.8] SpectralGuns 1.3.jar
[10:55:24] [main/DEBUG] [FML/]: Examining for coremod candidacy [MC1.8]deconstruction[v2.3.4].jar
[10:55:24] [main/DEBUG] [FML/]: Not found coremod data in [MC1.8]deconstruction[v2.3.4].jar
[10:55:24] [main/DEBUG] [FML/]: Examining for coremod candidacy AfraidOfTheDark-1.8-1.1.jar
[10:55:24] [main/DEBUG] [FML/]: Not found coremod data in AfraidOfTheDark-1.8-1.1.jar
[10:55:24] [main/DEBUG] [FML/]: Examining for coremod candidacy animalsplus-1.4.jar
[10:55:24] [main/DEBUG] [FML/]: Not found coremod data in animalsplus-1.4.jar
[10:55:24] [main/DEBUG] [FML/]: Examining for coremod candidacy ArchitectureCraft-1.0.0-mc1.8.jar
[10:55:24] [main/DEBUG] [FML/]: Not found coremod data in ArchitectureCraft-1.0.0-mc1.8.jar
[10:55:24] [main/DEBUG] [FML/]: Examining for coremod candidacy Aroma1997Core-1.8-1.0.3.4.jar
[10:55:24] [main/TRACE] [FML/]: Found FMLCorePluginContainsFMLMod marker in Aroma1997Core-1.8-1.0.3.4.jar, it will be examined later for regular @Mod instances
[10:55:24] [main/DEBUG] [FML/]: Instantiating coremod class CoreMod
[10:55:24] [main/WARN] [FML/]: The coremod aroma1997.core.coremod.CoreMod does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[10:55:24] [main/DEBUG] [FML/]: Added access transformer class aroma1997.core.coremod.asm.AromaAccessTransformer to enqueued access transformers
[10:55:24] [main/DEBUG] [FML/]: Enqueued coremod CoreMod
[10:55:24] [main/DEBUG] [FML/]: Examining for coremod candidacy assassincraft-MineCreed-1.5-MC-1.8.jar
[10:55:24] [main/DEBUG] [FML/]: Not found coremod data in assassincraft-MineCreed-1.5-MC-1.8.jar
[10:55:24] [main/DEBUG] [FML/]: Examining for coremod candidacy AutoSap-MC1.8-1.2.jar
[10:55:24] [main/DEBUG] [FML/]: Not found coremod data in AutoSap-MC1.8-1.2.jar
[10:55:24] [main/DEBUG] [FML/]: Examining for coremod candidacy BetterChests-1.8-1.2.0.0.jar
[10:55:24] [main/DEBUG] [FML/]: Not found coremod data in BetterChests-1.8-1.2.0.0.jar
[10:55:24] [main/DEBUG] [FML/]: Examining for coremod candidacy BiomesOPlenty-1.8-3.0.0.1391-universal.jar
[10:55:24] [main/TRACE] [FML/]: Found FMLCorePluginContainsFMLMod marker in BiomesOPlenty-1.8-3.0.0.1391-universal.jar, it will be examined later for regular @Mod instances
[10:55:24] [main/DEBUG] [FML/]: Instantiating coremod class BOPLoadingPlugin
[10:55:24] [main/WARN] [FML/]: The coremod biomesoplenty.common.asm.BOPLoadingPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[10:55:24] [main/DEBUG] [FML/]: Added access transformer class biomesoplenty.common.asm.transformers.BOPAccessTransformer to enqueued access transformers
[10:55:24] [main/DEBUG] [FML/]: Enqueued coremod BOPLoadingPlugin
[10:55:24] [main/DEBUG] [FML/]: Examining for coremod candidacy Bookshelf-1.8-2.0.3.jar
[10:55:24] [main/DEBUG] [FML/]: Not found coremod data in Bookshelf-1.8-2.0.3.jar
[10:55:24] [main/DEBUG] [FML/]: Examining for coremod candidacy buildcraft-7.1.13.jar
[10:55:24] [main/DEBUG] [FML/]: Not found coremod data in buildcraft-7.1.13.jar
[10:55:24] [main/DEBUG] [FML/]: Examining for coremod candidacy BuildcraftAdditions-1.7.10-1.8.jar
[10:55:24] [main/TRACE] [FML/]: Found FMLCorePluginContainsFMLMod marker in BuildcraftAdditions-1.7.10-1.8.jar, it will be examined later for regular @Mod instances
[10:55:24] [main/DEBUG] [FML/]: Instantiating coremod class BCALoadingPlugin
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: java.lang.NoClassDefFoundError: cpw/mods/fml/relauncher/IFMLLoadingPlugin
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.defineClass1(Native Method)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader.defineClass(URLClassLoader.java:455)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader$1.run(URLClassLoader.java:367)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.security.AccessController.doPrivileged(Native Method)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:117)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.Class.forName0(Native Method)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.Class.forName(Class.java:344)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:485)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:409)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:241)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:95)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:72)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:34)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:119)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.Launch.launch(Launch.java:115)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: Caused by: java.lang.ClassNotFoundException: cpw.mods.fml.relauncher.IFMLLoadingPlugin
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: ... 23 more
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: Caused by: java.lang.NullPointerException
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: ... 25 more
[10:55:24] [main/ERROR] [FML/]: An error occurred trying to configure the minecraft home at C:\Users\Nathan\AppData\Roaming\.minecraft for Forge Mod Loader
java.lang.NoClassDefFoundError: cpw/mods/fml/relauncher/IFMLLoadingPlugin
at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.8.0_25]
at java.lang.ClassLoader.defineClass(ClassLoader.java:760) ~[?:1.8.0_25]
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[?:1.8.0_25]
at java.net.URLClassLoader.defineClass(URLClassLoader.java:455) ~[?:1.8.0_25]
at java.net.URLClassLoader.access$100(URLClassLoader.java:73) ~[?:1.8.0_25]
at java.net.URLClassLoader$1.run(URLClassLoader.java:367) ~[?:1.8.0_25]
at java.net.URLClassLoader$1.run(URLClassLoader.java:361) ~[?:1.8.0_25]
at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_25]
at java.net.URLClassLoader.findClass(URLClassLoader.java:360) ~[?:1.8.0_25]
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:117) ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_25]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_25]
at java.lang.Class.forName0(Native Method) ~[?:1.8.0_25]
at java.lang.Class.forName(Class.java:344) ~[?:1.8.0_25]
at net.minecraftforge.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:485) ~[forge-1.8-11.14.4.1577.jar:?]
at net.minecraftforge.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:409) ~[forge-1.8-11.14.4.1577.jar:?]
at net.minecraftforge.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:241) ~[forge-1.8-11.14.4.1577.jar:?]
at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:95) [forge-1.8-11.14.4.1577.jar:?]
at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:72) [forge-1.8-11.14.4.1577.jar:?]
at net.minecraftforge.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:34) [forge-1.8-11.14.4.1577.jar:?]
at net.minecraftforge.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:119) [forge-1.8-11.14.4.1577.jar:?]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:115) [launchwrapper-1.12.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
Caused by: java.lang.ClassNotFoundException: cpw.mods.fml.relauncher.IFMLLoadingPlugin
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191) ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_25]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_25]
... 23 more
Caused by: java.lang.NullPointerException
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182) ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_25]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_25]
... 23 more
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: java.lang.NoClassDefFoundError: cpw/mods/fml/relauncher/IFMLLoadingPlugin
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.defineClass1(Native Method)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader.defineClass(URLClassLoader.java:455)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader$1.run(URLClassLoader.java:367)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.security.AccessController.doPrivileged(Native Method)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:117)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.Class.forName0(Native Method)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.Class.forName(Class.java:344)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:485)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:409)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:241)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:95)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:72)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:34)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraftforge.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:119)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.Launch.launch(Launch.java:115)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: Caused by: java.lang.ClassNotFoundException: cpw.mods.fml.relauncher.IFMLLoadingPlugin
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: ... 23 more
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: Caused by: java.lang.NullPointerException
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
[10:55:24] [main/INFO] [STDERR/]: [java.lang.Throwable$WrappedPrintStream:println:748]: ... 25 more
Thanks in advance
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When I start Minecraft with mods, then this error appears but I have absolutely no idea what it means:
Thanks in advance