Forge 1.7.2 not working

jaybug09 · May 16, 2015

Every time I click on the 'Forge' profile and edit the profile and select 1.7.2 Forge and then launch Minecraft, my game will close as if it's about to launch, but then it will pop back up again on the Game Output tab. I'm still kind of new to Minecraft (and definitely still a noob; I don't really understand things with computers very easily ) and I just need a little bit of help understanding what's going on and how to fix it. If you can help, thanks!

Here's what the Game Output tab says:

[16:49:10] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker

[16:49:10] [main/INFO] [LaunchWrapper]: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker

[16:49:10] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker

[16:49:10] [main/INFO] [FML]: Forge Mod Loader version 7.2.211.1121 for Minecraft 1.7.2 loading

[16:49:10] [main/INFO] [FML]: Java is Java HotSpot 64-Bit Server VM, version 1.8.0_25, running on Windows 8.1:amd64:6.3, installed at C:\Program Files (x86)\Minecraft\runtime\jre-x64\1.8.0_25

[16:49:10] [main/WARN] [FML]: The coremod codechicken.nei.asm.NEICorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft

java.lang.NoClassDefFoundError: codechicken/lib/asm/ASMInit

at codechicken.nei.asm.NEICorePlugin.<init>(NEICorePlugin.java:18)

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)

at java.lang.reflect.Constructor.newInstance(Constructor.java:408)

at java.lang.Class.newInstance(Class.java:438)

at cpw.mods.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:424)

at cpw.mods.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:312)

at cpw.mods.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:214)

at cpw.mods.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:90)

at cpw.mods.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:67)

at cpw.mods.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:34)

at cpw.mods.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:112)

at net.minecraft.launchwrapper.Launch.launch(Launch.java:114)

at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

Caused by: java.lang.ClassNotFoundException: codechicken.lib.asm.ASMInit

at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:188)

at java.lang.ClassLoader.loadClass(ClassLoader.java:424)

at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

... 15 more

Caused by: java.lang.NullPointerException

at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:180)

... 17 more

[16:49:11] [main/ERROR] [FML]: An error occurred trying to configure the minecraft home at C:\Users\Jaylie\AppData\Roaming\.minecraft for Forge Mod Loader

java.lang.NoClassDefFoundError: codechicken/lib/asm/ASMInit

at codechicken.nei.asm.NEICorePlugin.<init>(NEICorePlugin.java:18) ~[Not-Enough-Items-1.7.2%20(1).jar:?]

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_25]

at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:1.8.0_25]

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.8.0_25]

at java.lang.reflect.Constructor.newInstance(Constructor.java:408) ~[?:1.8.0_25]

at java.lang.Class.newInstance(Class.java:438) ~[?:1.8.0_25]

at cpw.mods.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:424) ~[forge-1.7.2-10.12.2.1121.jar:?]

at cpw.mods.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:312) ~[forge-1.7.2-10.12.2.1121.jar:?]

at cpw.mods.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:214) ~[forge-1.7.2-10.12.2.1121.jar:?]

at cpw.mods.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:90) [forge-1.7.2-10.12.2.1121.jar:?]

at cpw.mods.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:67) [forge-1.7.2-10.12.2.1121.jar:?]

at cpw.mods.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:34) [forge-1.7.2-10.12.2.1121.jar:?]

at cpw.mods.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:112) [forge-1.7.2-10.12.2.1121.jar:?]

at net.minecraft.launchwrapper.Launch.launch(Launch.java:114) [launchwrapper-1.9.jar:?]

at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.9.jar:?]

Caused by: java.lang.ClassNotFoundException: codechicken.lib.asm.ASMInit

at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:188) ~[launchwrapper-1.9.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]

... 15 more

Caused by: java.lang.NullPointerException

at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:180) ~[launchwrapper-1.9.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]

... 15 more

Exception in thread "main" java.lang.NoClassDefFoundError: codechicken/lib/asm/ASMInit