Forge 1.7.10 Wont work, please help!

#1 Oct 31, 2014
bugsbunniiee
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im using forge 1.7.10 - 10.13.0.1180 beacause the mods need that forge to work, however when i load minecraft it just comes back to the launcher.

here is the error:

[15:29:30] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[15:29:30] [main/INFO] [LaunchWrapper]: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[15:29:30] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker
[15:29:30] [main/INFO] [FML]: Forge Mod Loader version 7.10.18.1180 for Minecraft 1.7.10 loading
[15:29:30] [main/INFO] [FML]: Java is Java HotSpot(TM) 64-Bit Server VM, version 1.7.0_71, running on Windows 8.1:amd64:6.3, installed at C:\Program Files\Java\jre7
[15:29:30] [main/WARN] [FML]: The coremod am2.preloader.AM2PreloaderContainer does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[15:29:30] [main/INFO] [FML]: AMCore initializing...stand back! I'm going to try MAGIC!
java.lang.AbstractMethodError
at cpw.mods.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:423)
at cpw.mods.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:310)
at cpw.mods.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:211)
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:126)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:114)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
[15:29:30] [main/ERROR] [FML]: An error occurred trying to configure the minecraft home at C:\Users\\AppData\Roaming\.minecraft for Forge Mod Loader
java.lang.AbstractMethodError
at cpw.mods.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:423) ~[forge-1.7.10-10.13.0.1180.jar:?]
at cpw.mods.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:310) ~[forge-1.7.10-10.13.0.1180.jar:?]
at cpw.mods.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:211) ~[forge-1.7.10-10.13.0.1180.jar:?]
at cpw.mods.fml.relauncher.FMLLaunchHandler.setupHome(FMLLaunchHandler.java:90) [forge-1.7.10-10.13.0.1180.jar:?]
at cpw.mods.fml.relauncher.FMLLaunchHandler.setupClient(FMLLaunchHandler.java:67) [forge-1.7.10-10.13.0.1180.jar:?]
at cpw.mods.fml.relauncher.FMLLaunchHandler.configureForClientLaunch(FMLLaunchHandler.java:34) [forge-1.7.10-10.13.0.1180.jar:?]
at cpw.mods.fml.common.launcher.FMLTweaker.injectIntoClassLoader(FMLTweaker.java:126) [forge-1.7.10-10.13.0.1180.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:?]
Exception in thread "main" java.lang.AbstractMethodError
at cpw.mods.fml.relauncher.CoreModManager.loadCoreMod(CoreModManager.java:423)
at cpw.mods.fml.relauncher.CoreModManager.discoverCoreMods(CoreModManager.java:310)
at cpw.mods.fml.relauncher.CoreModManager.handleLaunch(CoreModManager.java:211)
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:126)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:114)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

thanks in advance

Last edited by bugsbunniiee: Oct 31, 2014

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#3 Oct 31, 2014
bugsbunniiee
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Quote from grimallq »
Looks like a wrong coremod file is used.

oh okay i read the error aswell and i am guessing it is ars magika?

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#5 Jan 3, 2015
Lord_of_the_Vis
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I had the exact same problem. Turns out I was just using the wrong Ars Magicka. If you're using an older version, update it and it should work.

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