Can someone help me please?  I recently got Minecraft and wanted to download the Twilight Forest mod.  When I went to the page that showed me how to install it in Minecraft (Im a BIG noob to pc modding) it told me to download Forge so I downloaded Forge the universal version and it looked like it was loading up wee but everytime I try it this happens.

 

 

2013-03-11 17:42:37 [iNFO] [ForgeModLoader] Forge Mod Loader version 4.7.4.520 for Minecraft 1.4.7 loading

2013-03-11 17:42:37 [FINEST] [ForgeModLoader] All core mods are successfully located

2013-03-11 17:42:37 [FINEST] [ForgeModLoader] Discovering coremods

2013-03-11 17:42:37 [FINEST] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/argo-2.25.jar

2013-03-11 17:42:37 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/argo-2.25.jar

2013-03-11 17:42:38 [FINEST] [ForgeModLoader] Download complete

2013-03-11 17:42:38 [iNFO] [ForgeModLoader] Download complete

2013-03-11 17:42:38 [FINEST] [ForgeModLoader] Library file argo-2.25.jar was downloaded and verified successfully

2013-03-11 17:42:38 [FINEST] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/guava-12.0.1.jar

2013-03-11 17:42:38 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/guava-12.0.1.jar

2013-03-11 17:42:43 [FINEST] [ForgeModLoader] Download complete

2013-03-11 17:42:43 [iNFO] [ForgeModLoader] Download complete

2013-03-11 17:42:43 [FINEST] [ForgeModLoader] Library file guava-12.0.1.jar was downloaded and verified successfully

2013-03-11 17:42:43 [FINEST] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/asm-all-4.0.jar

2013-03-11 17:42:43 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/asm-all-4.0.jar

2013-03-11 17:42:44 [FINEST] [ForgeModLoader] Download complete

2013-03-11 17:42:44 [iNFO] [ForgeModLoader] Download complete

2013-03-11 17:42:44 [FINEST] [ForgeModLoader] Library file asm-all-4.0.jar was downloaded and verified successfully

2013-03-11 17:42:44 [FINEST] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/bcprov-jdk15on-147.jar

2013-03-11 17:42:44 [iNFO] [ForgeModLoader] Downloading file http://files.minecraftforge.net/fmllibs/bcprov-jdk15on-147.jar

2013-03-11 17:42:50 [FINEST] [ForgeModLoader] Download complete

2013-03-11 17:42:50 [iNFO] [ForgeModLoader] Download complete

2013-03-11 17:42:50 [FINEST] [ForgeModLoader] Library file bcprov-jdk15on-147.jar was downloaded and verified successfully

2013-03-11 17:42:51 [FINEST] [ForgeModLoader] Running coremod plugins

2013-03-11 17:42:51 [FINEST] [ForgeModLoader] Running coremod plugin FMLCorePlugin

2013-03-11 17:42:51 [iNFO] [ForgeModLoader] Found valid fingerprint for Minecraft Forge. Certificate fingerprint de4cf8a3f3bc15635810044c39240bf96804ea7d

2013-03-11 17:42:51 [FINEST] [ForgeModLoader] Coremod plugin FMLCorePlugin run successfully

2013-03-11 17:42:51 [FINEST] [ForgeModLoader] Running coremod plugin FMLForgePlugin

2013-03-11 17:42:51 [FINEST] [ForgeModLoader] Coremod plugin FMLForgePlugin run successfully

2013-03-11 17:42:51 [FINEST] [ForgeModLoader] Validating minecraft

2013-03-11 17:42:51 [iNFO] [sTDOUT] A CRITICAL PROBLEM OCCURED INITIALIZING MINECRAFT - LIKELY YOU HAVE AN INCORRECT VERSION FOR THIS FML

2013-03-11 17:42:57 [iNFO] [sTDERR] Exception in thread "Thread-4" java.lang.RuntimeException: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException

2013-03-11 17:42:57 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:175)

2013-03-11 17:42:57 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.relaunchApplet(FMLRelauncher.java:242)

2013-03-11 17:42:57 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.appletEntry(FMLRelauncher.java:212)

2013-03-11 17:42:57 [iNFO] [sTDERR] at net.minecraft.client.MinecraftApplet.init(MinecraftApplet.java:25)

2013-03-11 17:42:57 [iNFO] [sTDERR] at net.minecraft.Launcher.replace(Launcher.java:136)

2013-03-11 17:42:57 [iNFO] [sTDERR] at net.minecraft.Launcher$1.run(Launcher.java:79)

2013-03-11 17:42:57 [iNFO] [sTDERR] Caused by: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException

2013-03-11 17:42:57 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:291)

2013-03-11 17:42:57 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:155)

2013-03-11 17:42:57 [iNFO] [sTDERR] ... 5 more

2013-03-11 17:42:57 [iNFO] [sTDERR] Caused by: java.lang.reflect.InvocationTargetException

2013-03-11 17:42:57 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

2013-03-11 17:42:57 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

2013-03-11 17:42:57 [iNFO] [sTDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

2013-03-11 17:42:57 [iNFO] [sTDERR] at java.lang.reflect.Method.invoke(Unknown Source)

2013-03-11 17:42:57 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:283)

2013-03-11 17:42:57 [iNFO] [sTDERR] ... 6 more

2013-03-11 17:42:57 [iNFO] [sTDERR] Caused by: java.lang.IllegalAccessError: tried to access class b from class cpw.mods.fml.common.Loader

2013-03-11 17:42:57 [iNFO] [sTDERR] at cpw.mods.fml.common.Loader.<init>(Loader.java:172)

2013-03-11 17:42:57 [iNFO] [sTDERR] at cpw.mods.fml.common.Loader.instance(Loader.java:151)

2013-03-11 17:42:57 [iNFO] [sTDERR] ... 11 more

 

 

Ive even tried downloading a new java, and went through at least 5 videos on how to install it and I followed the instructions word for word but I still keep getting the error message above.  I also tried downloading Forge source and, the Forge Java but when I download and install them with the Twilight Forest It changes my Minecraft world into the Twilight Forest and half of the blocks in the world are glitched out.  I just want to play around with some of the mods like Twilight Forest but, I cant.  i would really appreciate it if some would would be able to give me a simple solution to my very monstrous problem.  ( Sorry cant help but be a little dramatic lol).

2013-03-11 17:42:51  [sTDOUT] A CRITICAL PROBLEM OCCURED INITIALIZING MINECRAFT - LIKELY YOU HAVE AN INCORRECT VERSION FOR THIS FML.  But, when I checked the download it said it was for 1.4.7 and thats the one i downloaded and it matches my Minecraft.

You need to make sure that fml_at.cfg is in your MC jar.

It is in the MC jar I just checked and its there.

This is today's log.

 

 

2013-03-12 14:37:15 [iNFO] [ForgeModLoader] Forge Mod Loader version 4.7.4.520 for Minecraft 1.4.7 loading

2013-03-12 14:37:15 [FINEST] [ForgeModLoader] All core mods are successfully located

2013-03-12 14:37:15 [FINEST] [ForgeModLoader] Discovering coremods

2013-03-12 14:37:15 [FINEST] [ForgeModLoader] Found library file argo-2.25.jar present and correct in lib dir

2013-03-12 14:37:15 [FINEST] [ForgeModLoader] Found library file guava-12.0.1.jar present and correct in lib dir

2013-03-12 14:37:15 [FINEST] [ForgeModLoader] Found library file asm-all-4.0.jar present and correct in lib dir

2013-03-12 14:37:15 [FINEST] [ForgeModLoader] Found library file bcprov-jdk15on-147.jar present and correct in lib dir

2013-03-12 14:37:15 [FINEST] [ForgeModLoader] Running coremod plugins

2013-03-12 14:37:15 [FINEST] [ForgeModLoader] Running coremod plugin FMLCorePlugin

2013-03-12 14:37:15 [iNFO] [ForgeModLoader] Found valid fingerprint for Minecraft Forge. Certificate fingerprint de4cf8a3f3bc15635810044c39240bf96804ea7d

2013-03-12 14:37:15 [FINEST] [ForgeModLoader] Coremod plugin FMLCorePlugin run successfully

2013-03-12 14:37:15 [FINEST] [ForgeModLoader] Running coremod plugin FMLForgePlugin

2013-03-12 14:37:15 [FINEST] [ForgeModLoader] Coremod plugin FMLForgePlugin run successfully

2013-03-12 14:37:15 [FINEST] [ForgeModLoader] Validating minecraft

2013-03-12 14:37:15 [iNFO] [sTDOUT] A CRITICAL PROBLEM OCCURED INITIALIZING MINECRAFT - LIKELY YOU HAVE AN INCORRECT VERSION FOR THIS FML

2013-03-12 14:37:18 [iNFO] [sTDERR] Exception in thread "Thread-4" java.lang.RuntimeException: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException

2013-03-12 14:37:18 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:175)

2013-03-12 14:37:18 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.relaunchApplet(FMLRelauncher.java:242)

2013-03-12 14:37:18 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.appletEntry(FMLRelauncher.java:212)

2013-03-12 14:37:18 [iNFO] [sTDERR] at net.minecraft.client.MinecraftApplet.init(MinecraftApplet.java:25)

2013-03-12 14:37:18 [iNFO] [sTDERR] at net.minecraft.Launcher.replace(Launcher.java:136)

2013-03-12 14:37:18 [iNFO] [sTDERR] at net.minecraft.Launcher$1.run(Launcher.java:79)

2013-03-12 14:37:18 [iNFO] [sTDERR] Caused by: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException

2013-03-12 14:37:18 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:291)

2013-03-12 14:37:18 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.FMLRelauncher.setupHome(FMLRelauncher.java:155)

2013-03-12 14:37:18 [iNFO] [sTDERR] ... 5 more

2013-03-12 14:37:18 [iNFO] [sTDERR] Caused by: java.lang.reflect.InvocationTargetException

2013-03-12 14:37:18 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

2013-03-12 14:37:18 [iNFO] [sTDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

2013-03-12 14:37:18 [iNFO] [sTDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

2013-03-12 14:37:18 [iNFO] [sTDERR] at java.lang.reflect.Method.invoke(Unknown Source)

2013-03-12 14:37:18 [iNFO] [sTDERR] at cpw.mods.fml.relauncher.RelaunchLibraryManager.handleLaunch(RelaunchLibraryManager.java:283)

2013-03-12 14:37:18 [iNFO] [sTDERR] ... 6 more

2013-03-12 14:37:18 [iNFO] [sTDERR] Caused by: java.lang.IllegalAccessError: tried to access class b from class cpw.mods.fml.common.Loader

2013-03-12 14:37:18 [iNFO] [sTDERR] at cpw.mods.fml.common.Loader.<init>(Loader.java:172)

2013-03-12 14:37:18 [iNFO] [sTDERR] at cpw.mods.fml.common.Loader.instance(Loader.java:151)

2013-03-12 14:37:18 [iNFO] [sTDERR] ... 11 more

 

 

 

 

And what does this mean?

 

2013-03-12 14:37:18  [sTDERR] Caused by: java.lang.IllegalAccessError: tried to access class b from class cpw.mods.fml.common.Loader

 

 

I can tell you that my Minecraft is not illegal and was purchased about a couple of days ago.

Unless you've derped something up, the fml_at.cfg will grant access to the b class.

Make sure you've installed the correct version into your jar.

Thats the thing I have.  I downloaded Forge for 1.4.7 and thats the version of Minecraft that I have.  I have also downloaded and installed it word for word.  I think the problem might be with Java but, how can I fix the java?

 

I put a new download I just about a couple of seconds ago in my minecraft and my launcher said it has 4 errors.  This is a NEW and sixth download of forge universal because ALL of the other mincraft forge downloads Ive done have the SAME problem And yes this is for 1.4.7. I am also using magiclauncher because the regular launcher wont load minecraft forge.

What launcher are you using?

Im using magic launcher now.  But when I was having the problem I was having it with the default launcher but, now magic launcher has the same problem.  And yes I am sure I did everything right and I didn't "derp" it up I actually know for a fact that I am using the right forge and it is up to date now with minecraft 1.5 but thats the thing I downloaded the new 1.5 forge and now it wont even work with the default launcher or magic launcher Ive tried everything and yes I am installing forge correctly I even got the tutorial here but it still gives me a fatal error message.

 

I should also clarify that I was able to play and forge worked on magic launcher before the update but, after I updated minecraft, the magic launcher and every mod I had (including Forge to 1.5) it gave the fatal error message.

 

Considering FML doesnt attempt to access the 'b' class in 1.5 i highly doubt you're having the same issue.

All in all, its just you're not installing the required data from Forge. Just like the 99% of other people who think forge has issues -.-

Try the lates forge this was happening in my eclispe to so i could not test my mod I had to download the LATEST!