Trouble with minecraft forge for 1.7.10 - Java Edition Support - Support - Minecraft Forum

#1 Nov 23, 2015

Ice_Radioactive

Tree Puncher
Join Date: 11/22/2015
Posts: 12
Member Details

I'm really not a computer person and don't really know what's going on, so any help would be greatly appreciated!

I go to the forge website, and click on version 1.7.10. click the windows download, because i have windows 10. It downloads, and i go to run it,but a popup appears. "This application requires a Java Runtime Environment 1.6.0" The only option is to exit out of the popup, and it opens my browser to the java website to download the latest Java version. I download it and install, and try to run the forge download again, but the same thing happens.

ALSO

I then decided to try the other download, that just says installer instead of installer-win. It downloads, i run it, it installs forge. I go to launch the game, it crashes, and I receive this message

[17:18:46] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[17:18:46] [main/INFO] [LaunchWrapper]: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[17:18:46] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker
[17:18:46] [main/INFO] [FML]: Forge Mod Loader version 7.99.36.1558 for Minecraft 1.7.10 loading
[17:18:46] [main/INFO] [FML]: Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_25, running on Windows 7:amd64:6.1, installed at C:\Program Files (x86)\Minecraft\runtime\jre-x64\1.8.0_25
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: java.lang.NoClassDefFoundError: net/minecraftforge/fml/relauncher/IFMLLoadingPlugin
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.defineClass1(Native Method)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader.defineClass(URLClassLoader.java:455)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader$1.run(URLClassLoader.java:367)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.security.AccessController.doPrivileged(Native Method)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:117)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.Class.forName0(Native Method)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.Class.forName(Class.java:344)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at cpw.mods.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:460)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at cpw.mods.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:389)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at cpw.mods.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:221)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at cpw.mods.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:90)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at cpw.mods.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:67)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at cpw.mods.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:34)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at cpw.mods.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:126)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.Launch.launch(Launch.java:115)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: Caused by: java.lang.ClassNotFoundException: net.minecraftforge.fml.relauncher.IFMLLoadingPlugin
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: ... 23 more
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: Caused by: java.lang.NullPointerException
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: ... 25 more
[17:18:47] [main/ERROR] [FML]: An error occurred trying to configure the minecraft home at C:\Users\David\AppData\Roaming\.minecraft for Forge Mod Loader
java.lang.NoClassDefFoundError: net/minecraftforge/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 cpw.mods.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:460) ~[forge-1.7.10-10.13.4.1558-1.7.10.jar:?]
at cpw.mods.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:389) ~[forge-1.7.10-10.13.4.1558-1.7.10.jar:?]
at cpw.mods.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:221) ~[forge-1.7.10-10.13.4.1558-1.7.10.jar:?]
at cpw.mods.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:90) [forge-1.7.10-10.13.4.1558-1.7.10.jar:?]
at cpw.mods.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:67) [forge-1.7.10-10.13.4.1558-1.7.10.jar:?]
at cpw.mods.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:34) [forge-1.7.10-10.13.4.1558-1.7.10.jar:?]
at cpw.mods.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:126) [forge-1.7.10-10.13.4.1558-1.7.10.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: net.minecraftforge.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
Exception in thread "main" [17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: java.lang.NoClassDefFoundError: net/minecraftforge/fml/relauncher/IFMLLoadingPlugin
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.defineClass1(Native Method)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader.defineClass(URLClassLoader.java:455)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader$1.run(URLClassLoader.java:367)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.security.AccessController.doPrivileged(Native Method)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:117)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.Class.forName0(Native Method)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.Class.forName(Class.java:344)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at cpw.mods.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:460)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at cpw.mods.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:389)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at cpw.mods.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:221)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at cpw.mods.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:90)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at cpw.mods.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:67)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at cpw.mods.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:34)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at cpw.mods.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:126)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.Launch.launch(Launch.java:115)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: Caused by: java.lang.ClassNotFoundException: net.minecraftforge.fml.relauncher.IFMLLoadingPlugin
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: ... 23 more
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: Caused by: java.lang.NullPointerException
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
[17:18:47] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:748]: ... 25 more

#3 Nov 23, 2015

ChaosTheDude

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Join Date: 8/20/2015
Posts: 1,374
Minecraft: ChaosTheDude
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java.lang.NoClassDefFoundError: net/minecraftforge/fml/relauncher/IFMLLoadingPlugin

1.8 mod(s) installed.

Realistic Torches - Causes torches to burn out after a configurable amount of time.

Nature's Compass - A utility item that allows you to search for any biome's location in the world.

Notes - Provides a clientside in-game notepad.

Souls - After you die, a hostile Soul that stores your inventory will spawn.

Auto Refresh - Automatically refreshes your server list and alerts you when your selected server comes online.

Pick Block Plus - A clientside mod that significantly improves the vanilla pick block function.

^{And a few others that we don't talk about.}

#4 Nov 23, 2015

Ice_Radioactive

Tree Puncher
Join Date: 11/22/2015
Posts: 12
Member Details

oh ok. so if i have a 1.8 forge installed with mods, i cant have 1.7.10 forge? If i get rid of my 1.8 forge it should work fine?

#5 Nov 23, 2015

ChaosTheDude

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Join Date: 8/20/2015
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Quote from Ice_Radioactive »

oh ok. so if i have a 1.8 forge installed with mods, i cant have 1.7.10 forge? If i get rid of my 1.8 forge it should work fine?

Forge will run anything in your mods folder. It doesn't distinguish between 1.7.10 mods, 1.8 mods, 1.6.4 mods, etc. Whatever is in the mods folder, it considers an appropriate mod, and it will run it. When you're using 1.7.10 Forge, you can only have 1.7.10 mods in your mods folder. When you're running 1.8 Forge, you can only have 1.8 mods in your mods folder.

Realistic Torches - Causes torches to burn out after a configurable amount of time.

Nature's Compass - A utility item that allows you to search for any biome's location in the world.

Notes - Provides a clientside in-game notepad.

Souls - After you die, a hostile Soul that stores your inventory will spawn.

Auto Refresh - Automatically refreshes your server list and alerts you when your selected server comes online.

Pick Block Plus - A clientside mod that significantly improves the vanilla pick block function.

^{And a few others that we don't talk about.}

#6 Nov 23, 2015

LoRaM100

Blaze Extinguisher
Location: Behind you
Join Date: 6/30/2011
Posts: 4,463
Location: United States of America
Member Details

My Mods folder is */mods/1.7.10 and */mods/1.8. By putting the Mods in the correct folder I can run both (many) Mod versions.

In answer to a question you posed, the MC version, Forge version, and ALL Mods must be the same (there are very few exceptions to this but they are rare)!

The latest version of Forge is 1.8(.0). The way it's stated in the Forge thread is confusing IMO. The "Download Latest" Is untested, unstable, and often won't work with many Mods. I suggest you use the "Download Recommended".

Lou

Links to pdf format, downloadable, command lists for (these often clarify/expand descriptions, and where possible link to the author's posting):
MoreCommands: http://www.mediafire.com/view/qjc9c6klcnp660e/CmdLstMoreCommands.pdf
WorldEdit: http://www.mediafire.com/view/bi7r00xd9rgxrrt/WE_Commands.pdf

#7 Nov 23, 2015

Ice_Radioactive

Tree Puncher
Join Date: 11/22/2015
Posts: 12
Member Details

thank you all so much!