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I am using 1.6.4. I downloaded the NEI mod, but to use NEI i need CodeChickenCore. I got CodeChickenCore, and my minecraft would crash non stop. I redownloaded CCC, and it still wouldnt work. So then i decided to just take it out and see what would happen. I took all the files out like CodeChickenLib and the configs for it, and even with all of its data out it would still crash saying the same thing, about how it was CodeChickenCore.

Here is the crash report.

BTW im not actually sure its a crash report, it literally comes up as i click play game in the launcher, it comes u in the game output tab on the launcher.

Aug 30, 2014 6:06:51 AM net.minecraft.launchwrapper.LogWrapper log
INFO: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
Aug 30, 2014 6:06:52 AM net.minecraft.launchwrapper.LogWrapper log
INFO: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker
Aug 30, 2014 6:06:52 AM net.minecraft.launchwrapper.LogWrapper log
INFO: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker
2014-08-30 06:06:52 [INFO] [ForgeModLoader] Forge Mod Loader version 6.4.49.965 for Minecraft 1.6.4 loading
2014-08-30 06:06:52 [INFO] [ForgeModLoader] Java is Java HotSpot(TM) 64-Bit Server VM, version 1.7.0_67, running on Windows 8.1:amd64:6.3, installed at C:\Program Files\Java\jre7
2014-08-30 06:06:52 [WARNING] [ForgeModLoader] The coremod codechicken.nei.asm.NEICorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2014-08-30 06:06:52 [INFO] [ForgeModLoader] Loading tweaker optifine.OptiFineForgeTweaker from OptiFine_1.6.4_HD_U_D1.jar
2014-08-30 06:06:52 [INFO] [ForgeModLoader] Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
2014-08-30 06:06:52 [INFO] [ForgeModLoader] Loading tweak class name optifine.OptiFineForgeTweaker
2014-08-30 06:06:52 [INFO] [ForgeModLoader] Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
2014-08-30 06:06:52 [INFO] [ForgeModLoader] Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
2014-08-30 06:06:52 [INFO] [ForgeModLoader] Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
2014-08-30 06:06:52 [INFO] [ForgeModLoader] Calling tweak class optifine.OptiFineForgeTweaker
2014-08-30 06:06:52 [INFO] [STDOUT] OptiFineForgeTweaker: acceptOptions
2014-08-30 06:06:52 [INFO] [STDOUT] OptiFineForgeTweaker: injectIntoClassLoader
2014-08-30 06:06:52 [INFO] [STDOUT] OptiFine ClassTransformer
2014-08-30 06:06:52 [INFO] [STDOUT] OptiFine URL: file:/C:/Users/gjxbo_000/AppData/Roaming/.minecraft/mods/OptiFine_1.6.4_HD_U_D1.jar
2014-08-30 06:06:52 [INFO] [STDOUT] OptiFine ZIP file: java.util.zip.ZipFile@564389b7
2014-08-30 06:06:52 [INFO] [ForgeModLoader] Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
2014-08-30 06:06:52 [INFO] [STDOUT] Loaded 40 rules from AccessTransformer config file fml_at.cfg
2014-08-30 06:06:54 [SEVERE] [ForgeModLoader] There is a binary discrepency between the expected input class aa (aa) and the actual class. Checksum on disk is 72f80b46, in patch c7e1682c. Things are probably about to go very wrong. Did you put something into the jar file?
2014-08-30 06:06:54 [SEVERE] [ForgeModLoader] The game is going to exit, because this is a critical error, and it is very improbable that the modded game will work, please obtain clean jar files.

Please, if anyone can help, i would really love that.

Well the crash has nothing to do with any of chicken_bones's mods, since it doesn't go any further than finding them. The crash is something to do with Optifine. How did you install it?

Quote from unapologeticromantic»

Well the crash has nothing to do with any of chicken_bones's mods, since it doesn't go any further than finding them. The crash is something to do with Optifine. How did you install it?

Well, i did go to the optifine intallers website to download it in 1.6.4.

What installers website? With forge installed, all you have to do is put the Optifine jar file in the mods folder, there shouldn't be any installer to run.

I just used optifine.net. i did put the optifine jar file in the mods folder. IT was working just fine until a little bit ago, not sure what the problem is.

You may have to do a clean install of forge, because somehow at least one of the classes inside minecraft.jar got corrupted.

How exactly do i do a clean install of forge? Does that just mean, redownload it?

You have to delete the folder for your forge profile, re-download the installer, and install it onto a new profile.

Ok i will tr.y that thanks

Thanks! it worked. Thanks for ur help