Minecraft Forums

Hello,
Recently I decided to create a new magic launcher setup containing Optifine and Damage Indicators (plus forge since Damage Indicators requires it). I downloaded the recommended build of Forge and decided to clean up some of my other setups. At this point I switched to a railcraft setup I have (in the setup screen) which I change the jar file for when I use it (since railcraft is still 1.4.7) and magic launcher crashed. I'm not sure if that is relevant, but it has happened every time since. Now, my main problem is that forge will not be compatible in my new setup config (or in any other one). It says "not compatible" in red letters next to forge, and crashes when I try to log in. The error report is here:
Please help!

I'm sorry, putting this part:

At this point I switched to a railcraft setup I have (in the setup screen) which I change the jar file for when I use it (since railcraft is still 1.4.7) and magic launcher crashed.

probably wasn't a good idea as it just confuses things.
All of the mods are 1.5.1, I have never had problems with forge before. I'm not sure it is an issue with my mods as they were all working before this. Everything that used forge just suddenly stuffed up.

I thought it was fixed for a moment. I looked at your post and noticed you quoted a part of the error log about an out of date nei. I had some old nei files in the coremods folder. I took these out, but although I now get past the fml loading window, when minecraft itself opens, I see the splash screen for a split second and then freeze on a black screen. No error log either.

Problem solved!
Turns out that if you want to install opifine with forge, it needs to overwrite some of it's files (and therefore installed AFTER forge). So I guess the lesson learned here is always read the instructions.

Quote from ChristoDMS

Hello,
Recently I decided to create a new magic launcher setup containing Optifine and Damage Indicators (plus forge since Damage Indicators requires it). I downloaded the recommended build of Forge and decided to clean up some of my other setups. At this point I switched to a railcraft setup I have (in the setup screen) which I change the jar file for when I use it (since railcraft is still 1.4.7) and magic launcher crashed. I'm not sure if that is relevant, but it has happened every time since. Now, my main problem is that forge will not be compatible in my new setup config (or in any other one). It says "not compatible" in red letters next to forge, and crashes when I try to log in. The error report is here:

 2013-04-06 15:53:56 [INFO] [ForgeModLoader] Forge Mod Loader version 5.1.8.611 for Minecraft 1.5.1 loading
2013-04-06 15:53:56 [INFO] [ForgeModLoader] Java is Java HotSpot(TM) 64-Bit Server VM, version 1.7.0_04, running on Windows 7:amd64:6.1, installed at C:\Program Files\Java\jre7
2013-04-06 15:53:56 [FINE] [ForgeModLoader] Java classpath at launch is /C:/Users/home/Desktop/MagicLauncher_1.0.0.exe
2013-04-06 15:53:56 [FINE] [ForgeModLoader] Java library path at launch is bin/natives
2013-04-06 15:53:56 [FINE] [ForgeModLoader] Enabling runtime deobfuscation
2013-04-06 15:53:56 [FINEST] [ForgeModLoader] All core mods are successfully located
2013-04-06 15:53:56 [FINEST] [ForgeModLoader] Discovering coremods
2013-04-06 15:53:56 [FINEST] [ForgeModLoader] Found a candidate coremod CodeChickenCore 0.7.3.jar
2013-04-06 15:53:56 [FINEST] [ForgeModLoader] Loading coremod CodeChickenCore 0.7.3.jar
2013-04-06 15:53:56 [WARNING] [ForgeModLoader] The coremod codechicken.core.asm.CodeChickenCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2013-04-06 15:53:56 [FINEST] [ForgeModLoader] Loaded coremod CodeChickenCore 0.7.3.jar
2013-04-06 15:53:56 [FINEST] [ForgeModLoader] Found a candidate coremod NotEnoughItems 1.4.7.0.jar
2013-04-06 15:53:56 [FINEST] [ForgeModLoader] Loading coremod NotEnoughItems 1.4.7.0.jar
2013-04-06 15:53:56 [WARNING] [ForgeModLoader] The coremod codechicken.nei.asm.NEICorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
2013-04-06 15:53:56 [FINEST] [ForgeModLoader] Loaded coremod NotEnoughItems 1.4.7.0.jar
2013-04-06 15:53:57 [FINEST] [ForgeModLoader] Found library file argo-small-3.2.jar present and correct in lib dir
2013-04-06 15:53:57 [FINEST] [ForgeModLoader] Found library file guava-14.0-rc3.jar present and correct in lib dir
2013-04-06 15:53:57 [FINEST] [ForgeModLoader] Found library file asm-all-4.1.jar present and correct in lib dir
2013-04-06 15:53:57 [FINEST] [ForgeModLoader] Found library file bcprov-jdk15on-148.jar present and correct in lib dir
2013-04-06 15:53:57 [FINEST] [ForgeModLoader] Found library file deobfuscation_data_1.5.1.zip present and correct in lib dir
2013-04-06 15:53:57 [FINEST] [ForgeModLoader] Found library file scala-library.jar present and correct in lib dir
2013-04-06 15:54:58 [INFO] [STDERR] java.lang.reflect.InvocationTargetException
2013-04-06 15:54:58 [INFO] [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2013-04-06 15:54:58 [INFO] [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
2013-04-06 15:54:58 [INFO] [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
2013-04-06 15:54:58 [INFO] [STDERR] at java.lang.reflect.Method.invoke(Unknown Source)
2013-04-06 15:54:58 [INFO] [STDERR] at magic.launcher.Launcher.main(Unknown Source)
2013-04-06 15:54:58 [INFO] [STDERR] Caused by: java.lang.RuntimeException: java.lang.NoClassDefFoundError: cpw/mods/fml/common/asm/ASMTransformer
2013-04-06 15:54:58 [INFO] [STDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:192)
2013-04-06 15:54:58 [INFO] [STDERR] at cpw.mods.fml.relauncher.FMLRelauncher.relaunchClient(FMLRelauncher.java:104)
2013-04-06 15:54:58 [INFO] [STDERR] at cpw.mods.fml.relauncher.FMLRelauncher.handleClientRelaunch(FMLRelauncher.java:38)
2013-04-06 15:54:58 [INFO] [STDERR] at net.minecraft.client.Minecraft.main(Minecraft.java:2228)
2013-04-06 15:54:58 [INFO] [STDERR] ... 5 more
2013-04-06 15:54:58 [INFO] [STDERR] Caused by: java.lang.NoClassDefFoundError: cpw/mods/fml/common/asm/ASMTransformer
2013-04-06 15:54:58 [INFO] [STDERR] at java.lang.ClassLoader.defineClass1(Native Method)
2013-04-06 15:54:58 [INFO] [STDERR] at java.lang.ClassLoader.defineClass(Unknown Source)
2013-04-06 15:54:58 [INFO] [STDERR] at java.security.SecureClassLoader.defineClass(Unknown Source)
2013-04-06 15:54:58 [INFO] [STDERR] at java.net.URLClassLoader.defineClass(Unknown Source)
2013-04-06 15:54:58 [INFO] [STDERR] at java.net.URLClassLoader.access$100(Unknown Source)
2013-04-06 15:54:58 [INFO] [STDERR] at java.net.URLClassLoader$1.run(Unknown Source)
2013-04-06 15:54:58 [INFO] [STDERR] at java.net.URLClassLoader$1.run(Unknown Source)
2013-04-06 15:54:58 [INFO] [STDERR] at java.security.AccessController.doPrivileged(Native Method)
2013-04-06 15:54:58 [INFO] [STDERR] at java.net.URLClassLoader.findClass(Unknown Source)
2013-04-06 15:54:58 [INFO] [STDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:134)
2013-04-06 15:54:58 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2013-04-06 15:54:58 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2013-04-06 15:54:58 [INFO] [STDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.registerTransformer(RelaunchClassLoader.java:96)
2013-04-06 15:54:58 [INFO] [STDERR] at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:271)
2013-04-06 15:54:58 [INFO] [STDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:172)
2013-04-06 15:54:58 [INFO] [STDERR] ... 8 more
2013-04-06 15:54:58 [INFO] [STDERR] Caused by: java.lang.ClassNotFoundException: cpw.mods.fml.common.asm.ASMTransformer
2013-04-06 15:54:58 [INFO] [STDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:211)
2013-04-06 15:54:58 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2013-04-06 15:54:58 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2013-04-06 15:54:58 [INFO] [STDERR] ... 23 more
2013-04-06 15:54:58 [INFO] [STDERR] Caused by: java.lang.NoClassDefFoundError: net/minecraftforge/event/Event
2013-04-06 15:54:58 [INFO] [STDERR] at net.minecraftforge.transformers.EventTransformer.buildEvents(EventTransformer.java:59)
2013-04-06 15:54:58 [INFO] [STDERR] at net.minecraftforge.transformers.EventTransformer.transform(EventTransformer.java:35)
2013-04-06 15:54:58 [INFO] [STDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.runTransformers(RelaunchClassLoader.java:292)
2013-04-06 15:54:58 [INFO] [STDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:199)
2013-04-06 15:54:58 [INFO] [STDERR] ... 25 more
2013-04-06 15:54:58 [INFO] [STDERR] Caused by: java.lang.ClassNotFoundException: net.minecraftforge.event.Event
2013-04-06 15:54:58 [INFO] [STDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:211)
2013-04-06 15:54:58 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2013-04-06 15:54:58 [INFO] [STDERR] at java.lang.ClassLoader.loadClass(Unknown Source)
2013-04-06 15:54:58 [INFO] [STDERR] ... 29 more
2013-04-06 15:54:58 [INFO] [STDERR] Caused by: java.lang.AbstractMethodError
2013-04-06 15:54:58 [INFO] [STDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.runTransformers(RelaunchClassLoader.java:292)
2013-04-06 15:54:58 [INFO] [STDERR] at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:199)
2013-04-06 15:54:58 [INFO] [STDERR] ... 31 more 

Please help!

forge conflicts with magiclauncher when installing so do the old fashion way!the link is in my signature

OPTIFINE DOES NOT WORK WITH FORGE