Posted May 16, 201510 yr 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 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 Java HotSpot 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release
May 17, 201510 yr Don't use 1.7.2, update to 1.7.10. 1.7.2 has issues with java 8 that will probably not be fixed because there is no advantage to using 1.7.2 over 1.7.10
May 17, 201510 yr Author Okay, thank you! Don't use 1.7.2, update to 1.7.10. 1.7.2 has issues with java 8 that will probably not be fixed because there is no advantage to using 1.7.2 over 1.7.10
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