Forge Crashing on Startup

[jj999124]

forge keeps crashing every time i try to start it. logs looks like stuff isnt downloading during install.

 

Tried uninstall/reinstall multiple times

 

logs from installer:

Considering library net.minecraftforge:forge:1.12.2-14.23.2.2611: 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 jline:jline:2.13: Not Downloading {Wrong Side}
Considering library com.typesafe.akka:akka-actor_2.11:2.3.3
Checking "C:\Users\jj999\AppData\Roaming\.minecraft\libraries\com\typesafe\akka\akka-actor_2.11\2.3.3\akka-actor_2.11-2.3.3.jar" internal checksums
    checksums.sha1 validated successfully
    Jar contents validated successfully
Considering library com.typesafe:config:1.2.1
Checking "C:\Users\jj999\AppData\Roaming\.minecraft\libraries\com\typesafe\config\1.2.1\config-1.2.1.jar" internal checksums
    checksums.sha1 validated successfully
    Jar contents validated successfully
Considering library org.scala-lang:scala-actors-migration_2.11:1.1.0
Checking "C:\Users\jj999\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-actors-migration_2.11\1.1.0\scala-actors-migration_2.11-1.1.0.jar" internal checksums
    checksums.sha1 validated successfully
    Jar contents validated successfully
Considering library org.scala-lang:scala-compiler:2.11.1
Checking "C:\Users\jj999\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-compiler\2.11.1\scala-compiler-2.11.1.jar" internal checksums
    checksums.sha1 validated successfully
    Jar contents validated successfully
Considering library org.scala-lang.plugins:scala-continuations-library_2.11:1.0.2
Checking "C:\Users\jj999\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" internal checksums
    checksums.sha1 validated successfully
    Jar contents validated successfully
Considering library org.scala-lang.plugins:scala-continuations-plugin_2.11.1:1.0.2
Checking "C:\Users\jj999\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" internal checksums
    checksums.sha1 validated successfully
    Jar contents validated successfully
Considering library org.scala-lang:scala-library:2.11.1
Checking "C:\Users\jj999\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-library\2.11.1\scala-library-2.11.1.jar" internal checksums
    checksums.sha1 validated successfully
    Jar contents validated successfully
Considering library org.scala-lang:scala-parser-combinators_2.11:1.0.1
Checking "C:\Users\jj999\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-parser-combinators_2.11\1.0.1\scala-parser-combinators_2.11-1.0.1.jar" internal checksums
    checksums.sha1 validated successfully
    Jar contents validated successfully
Considering library org.scala-lang:scala-reflect:2.11.1
Checking "C:\Users\jj999\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-reflect\2.11.1\scala-reflect-2.11.1.jar" internal checksums
    checksums.sha1 validated successfully
    Jar contents validated successfully
Considering library org.scala-lang:scala-swing_2.11:1.0.1
Checking "C:\Users\jj999\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-swing_2.11\1.0.1\scala-swing_2.11-1.0.1.jar" internal checksums
    checksums.sha1 validated successfully
    Jar contents validated successfully
Considering library org.scala-lang:scala-xml_2.11:1.0.2
Checking "C:\Users\jj999\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-xml_2.11\1.0.2\scala-xml_2.11-1.0.2.jar" internal checksums
    checksums.sha1 validated successfully
    Jar contents validated successfully
Considering library lzma:lzma:0.0.1: Not Downloading {Wrong Side}
Considering library net.sf.jopt-simple:jopt-simple:5.0.3: Not Downloading {Wrong Side}
Considering library java3d:vecmath:1.5.2
Considering library net.sf.trove4j:trove4j:3.0.3
Considering library net.minecraftforge:MercuriusUpdater:1.12.2
 

[Choonster]

The installer doesn't download libraries if they're already present or not required on the client/server (depending on which one you're installing). There are no errors in that log, everything appears to have worked correctly.

 

If Forge is crashing, post the FML log (logs/fml-client-latest.log in the game directory) in a spoiler (the eye icon in the post editor).

[jj999124]

Spoiler

[23:42:18] [main/DEBUG] [FML/]: Injecting tracing printstreams for STDOUT/STDERR.
[23:42:19] [main/INFO] [FML/]: Forge Mod Loader version 14.23.2.2611 for Minecraft 1.12.2 loading
[23:42:19] [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:\Program Files (x86)\Minecraft\runtime\jre-x64\1.8.0_25
[23:42:19] [main/DEBUG] [FML/]: Java classpath at launch is:
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\net\minecraftforge\forge\1.12.2-14.23.2.2611\forge-1.12.2-14.23.2.2611.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.12\launchwrapper-1.12.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-all\5.2\asm-all-5.2.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\jline\jline\2.13\jline-2.13.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\com\typesafe\akka\akka-actor_2.11\2.3.3\akka-actor_2.11-2.3.3.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\com\typesafe\config\1.2.1\config-1.2.1.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-actors-migration_2.11\1.1.0\scala-actors-migration_2.11-1.1.0.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-compiler\2.11.1\scala-compiler-2.11.1.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\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
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\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
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-library\2.11.1\scala-library-2.11.1.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-parser-combinators_2.11\1.0.1\scala-parser-combinators_2.11-1.0.1.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-reflect\2.11.1\scala-reflect-2.11.1.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-swing_2.11\1.0.1\scala-swing_2.11-1.0.1.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-xml_2.11\1.0.2\scala-xml_2.11-1.0.2.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\lzma\lzma\0.0.1\lzma-0.0.1.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\5.0.3\jopt-simple-5.0.3.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\java3d\vecmath\1.5.2\vecmath-1.5.2.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\net\sf\trove4j\trove4j\3.0.3\trove4j-3.0.3.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\net\minecraftforge\MercuriusUpdater\1.12.2\MercuriusUpdater-1.12.2.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\com\mojang\patchy\1.1\patchy-1.1.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\oshi-project\oshi-core\1.1\oshi-core-1.1.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\net\java\dev\jna\jna\4.4.0\jna-4.4.0.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\net\java\dev\jna\platform\3.4.0\platform-3.4.0.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\com\ibm\icu\icu4j-core-mojang\51.2\icu4j-core-mojang-51.2.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\5.0.3\jopt-simple-5.0.3.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\io\netty\netty-all\4.1.9.Final\netty-all-4.1.9.Final.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\21.0\guava-21.0.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.5\commons-lang3-3.5.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.5\commons-io-2.5.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\commons-codec\commons-codec\1.10\commons-codec-1.10.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.8.0\gson-2.8.0.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\1.5.25\authlib-1.5.25.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\com\mojang\realms\1.10.19\realms-1.10.19.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-compress\1.8.1\commons-compress-1.8.1.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpclient\4.3.3\httpclient-4.3.3.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\commons-logging\commons-logging\1.1.3\commons-logging-1.1.3.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\org\apache\httpcomponents\httpcore\4.3.2\httpcore-4.3.2.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\it\unimi\dsi\fastutil\7.1.0\fastutil-7.1.0.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-api\2.8.1\log4j-api-2.8.1.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-core\2.8.1\log4j-core-2.8.1.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.4-nightly-20150209\lwjgl-2.9.4-nightly-20150209.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.4-nightly-20150209\lwjgl_util-2.9.4-nightly-20150209.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\libraries\com\mojang\text2speech\1.10.3\text2speech-1.10.3.jar
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Roaming\.minecraft\versions\1.12.2\1.12.2.jar
[23:42:19] [main/DEBUG] [FML/]: Java library path at launch is:
[23:42:19] [main/DEBUG] [FML/]:     C:\Users\jj999\AppData\Local\Temp\641a-76d1-db8e-d74f
[23:42:19] [main/DEBUG] [FML/]: Enabling runtime deobfuscation
[23:42:19] [main/DEBUG] [FML/]: Instantiating coremod class FMLCorePlugin
[23:42:19] [main/DEBUG] [FML/]: Found signing certificates for coremod FMLCorePlugin (net.minecraftforge.fml.relauncher.FMLCorePlugin)
[23:42:19] [main/DEBUG] [FML/]: Found certificate e3c3d50c7c986df74c645c0ac54639741c90a557
[23:42:19] [main/DEBUG] [FML/]: Added access transformer class net.minecraftforge.fml.common.asm.transformers.AccessTransformer to enqueued access transformers
[23:42:19] [main/DEBUG] [FML/]: Enqueued coremod FMLCorePlugin
[23:42:19] [main/DEBUG] [FML/]: Instantiating coremod class FMLForgePlugin
[23:42:19] [main/DEBUG] [FML/]: Found signing certificates for coremod FMLForgePlugin (net.minecraftforge.classloading.FMLForgePlugin)
[23:42:19] [main/DEBUG] [FML/]: Found certificate e3c3d50c7c986df74c645c0ac54639741c90a557
[23:42:19] [main/DEBUG] [FML/]: Enqueued coremod FMLForgePlugin
[23:42:19] [main/DEBUG] [FML/]: All fundamental core mods are successfully located
[23:42:19] [main/DEBUG] [FML/]: Attempting to load commandline specified mods, relative to C:\Users\jj999\AppData\Roaming\.minecraft
[23:42:19] [main/DEBUG] [FML/]: Discovering coremods
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy [1.7.10] SecurityCraft v1.8.2.3-hotfix.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in [1.7.10] SecurityCraft v1.8.2.3-hotfix.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy [1.7.10]Treecapitator-universal-2.0.4.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in [1.7.10]Treecapitator-universal-2.0.4.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy AgriCraft-1.7.10-1.5.0.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in AgriCraft-1.7.10-1.5.0.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy ArchimedesShips-1.7.1.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in ArchimedesShips-1.7.1.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy Avaritia-1.11.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in Avaritia-1.11.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy BiblioCraft[v1.11.7][MC1.7.10].jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in BiblioCraft[v1.11.7][MC1.7.10].jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy BigReactors-0.4.3A.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in BigReactors-0.4.3A.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy buildcraft-7.1.22.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in buildcraft-7.1.22.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy BuildcraftAdditions-1.7.10-2.2.5.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in BuildcraftAdditions-1.7.10-2.2.5.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy Carpenter's Blocks v3.3.8.1 - MC 1.7.10.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in Carpenter's Blocks v3.3.8.1 - MC 1.7.10.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy cfm-3.4.8-mc1.7.10.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in cfm-3.4.8-mc1.7.10.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy ChanceCubes-1.7.10-2.3.2.126.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in ChanceCubes-1.7.10-2.3.2.126.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy ChickenChunks-1.7.10-1.3.4.19-universal.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in ChickenChunks-1.7.10-1.3.4.19-universal.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy Chisel-2.9.5.11.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in Chisel-2.9.5.11.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy CodeChickenCore-1.7.10-1.0.7.47-universal.jar
[23:42:19] [main/TRACE] [FML/]: Adding CodeChickenCore-1.7.10-1.0.7.47-universal.jar to the list of known coremods, it will not be examined again
[23:42:19] [main/DEBUG] [FML/]: Instantiating coremod class CodeChickenCorePlugin
[23:42:19] [main/ERROR] [LaunchWrapper/]: Unable to launch
java.lang.RuntimeException: An error occurred trying to configure the Minecraft home at C:\Users\jj999\AppData\Roaming\.minecraft for Forge Mod Loader
    at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:104) ~[forge-1.12.2-14.23.2.2611.jar:?]
    at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:75) ~[forge-1.12.2-14.23.2.2611.jar:?]
    at net.minecraftforge.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:38) ~[forge-1.12.2-14.23.2.2611.jar:?]
    at net.minecraftforge.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:140) ~[forge-1.12.2-14.23.2.2611.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.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:592) ~[forge-1.12.2-14.23.2.2611.jar:?]
    at net.minecraftforge.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:427) ~[forge-1.12.2-14.23.2.2611.jar:?]
    at net.minecraftforge.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:254) ~[forge-1.12.2-14.23.2.2611.jar:?]
    at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:100) ~[forge-1.12.2-14.23.2.2611.jar:?]
    ... 5 more
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]
    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:592) ~[forge-1.12.2-14.23.2.2611.jar:?]
    at net.minecraftforge.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:427) ~[forge-1.12.2-14.23.2.2611.jar:?]
    at net.minecraftforge.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:254) ~[forge-1.12.2-14.23.2.2611.jar:?]
    at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:100) ~[forge-1.12.2-14.23.2.2611.jar:?]
    ... 5 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]
    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$1.run(URLClassLoader.java:361) ~[?:1.8.0_25]
    at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_25]
    at java.net.URLClassLoader.findClass(URLClassLoader.java:360) ~[?:1.8.0_25]
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:117) ~[launchwrapper-1.12.jar:?]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0_25]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_25]
    at java.lang.Class.forName0(Native Method) ~[?:1.8.0_25]
    at java.lang.Class.forName(Class.java:344) ~[?:1.8.0_25]
    at net.minecraftforge.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:592) ~[forge-1.12.2-14.23.2.2611.jar:?]
    at net.minecraftforge.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:427) ~[forge-1.12.2-14.23.2.2611.jar:?]
    at net.minecraftforge.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:254) ~[forge-1.12.2-14.23.2.2611.jar:?]
    at net.minecraftforge.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:100) ~[forge-1.12.2-14.23.2.2611.jar:?]
    ... 5 more
[23:42:19] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]: net.minecraftforge.fml.relauncher.FMLSecurityManager$ExitTrappedException
[23:42:19] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]:     at net.minecraftforge.fml.relauncher.FMLSecurityManager.checkPermission(FMLSecurityManager.java:49)
[23:42:19] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]:     at java.lang.SecurityManager.checkExit(SecurityManager.java:761)
[23:42:19] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]:     at java.lang.Runtime.exit(Runtime.java:107)
[23:42:19] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]:     at java.lang.System.exit(System.java:968)
[23:42:19] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]:     at net.minecraft.launchwrapper.Launch.launch(Launch.java:138)
[23:42:19] [main/INFO] [STDERR/]: [java.lang.ThreadGroup:uncaughtException:1052]:     at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
 

 

[Choonster]

25 minutes ago, jj999124 said:

[23:42:19] [main/INFO] [FML/]: Forge Mod Loader version 14.23.2.2611 for Minecraft 1.12.2 loading
...
[23:42:19] [main/DEBUG] [FML/]: Discovering coremods
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy [1.7.10] SecurityCraft v1.8.2.3-hotfix.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in [1.7.10] SecurityCraft v1.8.2.3-hotfix.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy [1.7.10]Treecapitator-universal-2.0.4.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in [1.7.10]Treecapitator-universal-2.0.4.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy AgriCraft-1.7.10-1.5.0.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in AgriCraft-1.7.10-1.5.0.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy ArchimedesShips-1.7.1.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in ArchimedesShips-1.7.1.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy Avaritia-1.11.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in Avaritia-1.11.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy BiblioCraft[v1.11.7][MC1.7.10].jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in BiblioCraft[v1.11.7][MC1.7.10].jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy BigReactors-0.4.3A.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in BigReactors-0.4.3A.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy buildcraft-7.1.22.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in buildcraft-7.1.22.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy BuildcraftAdditions-1.7.10-2.2.5.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in BuildcraftAdditions-1.7.10-2.2.5.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy Carpenter's Blocks v3.3.8.1 - MC 1.7.10.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in Carpenter's Blocks v3.3.8.1 - MC 1.7.10.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy cfm-3.4.8-mc1.7.10.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in cfm-3.4.8-mc1.7.10.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy ChanceCubes-1.7.10-2.3.2.126.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in ChanceCubes-1.7.10-2.3.2.126.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy ChickenChunks-1.7.10-1.3.4.19-universal.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in ChickenChunks-1.7.10-1.3.4.19-universal.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy Chisel-2.9.5.11.jar
[23:42:19] [main/DEBUG] [FML/]: Not found coremod data in Chisel-2.9.5.11.jar
[23:42:19] [main/DEBUG] [FML/]: Examining for coremod candidacy CodeChickenCore-1.7.10-1.0.7.47-universal.jar
[23:42:19] [main/TRACE] [FML/]: Adding CodeChickenCore-1.7.10-1.0.7.47-universal.jar to the list of known coremods, it will not be examined again
[23:42:19] [main/DEBUG] [FML/]: Instantiating coremod class CodeChickenCorePlugin
[23:42:19] [main/ERROR] [LaunchWrapper/]: Unable to launch
java.lang.RuntimeException: An error occurred trying to configure the Minecraft home at C:\Users\jj999\AppData\Roaming\.minecraft for Forge Mod Loader
...

Caused by: java.lang.NoClassDefFoundError: cpw/mods/fml/relauncher/IFMLLoadingPlugin

 

You're running 1.12.2, but you have a bunch of 1.7.10 mods installed; which won't work. Mods (especially coremods) only work for the Minecraft version they were built for.

 

You should use a separate game directory for each Minecraft version so each version has its own mods, config files, etc.

Edited February 18, 2018 by Choonster