balu88

And I used MCPatcher 'cause the minecraft produced the freezing error I described before.

W W W Wait a second! I did install the computercraft properly, like I mentioned, it worked with older versions of forge. I did put the extracted computercraft folder in the mods folder, like the descriptions of computercraft ordered me.

I've tried to install a mod, which requires Forge 3.3.8.148 or later. So I tried to update my forge. It did not work. So I reinstalled my minecraft and tried to install only the forge client 3.3.8.152 (the first recommended version after 3.3.8.148), but when I started the game it froze by a screen showing "Updating minecraft, done loading". Then, when I tried to launch the game with MCPatcher's Test Minecraft button, it worked. So I tried it with some mods: I tried it with OptiFine HD S C3, it worked. I tried it with Computercraft (with and without optifine), but it crashed. I tried it with Portal Gun v2 (with and without optifine), but it crashed. And it gave me this error messages. I think the problem is with newer forge, because these two mods worked with a few earlier forge versions, with every version which used risugami's modloader. Sorry for the bad English, I'm from Hungary. --- BEGIN ERROR REPORT 4a86a91e -------- Generated 2012.07.08. 1:53 Minecraft: Minecraft 1.2.5 OS: Windows XP (x86) version 5.1 Java: 1.7.0_05, Oracle Corporation VM: Java HotSpot Client VM (mixed mode), Oracle Corporation LWJGL: 2.4.2 OpenGL: Intel 945GM version 1.4.0 - Build 7.14.10.4926, Intel cpw.mods.fml.common.LoaderException: cpw.mods.fml.common.LoaderException: java.lang.NoClassDefFoundError: mods/ComputerCraft/mod_ComputerCraft (wrong name: mod_ComputerCraft) at cpw.mods.fml.common.Loader.load(Loader.java:436) at cpw.mods.fml.common.Loader.loadMods(Loader.java:592) at cpw.mods.fml.client.FMLClientHandler.onPreLoad(FMLClientHandler.java:193) at net.minecraft.client.Minecraft.a(Minecraft.java:383) at net.minecraft.client.Minecraft.run(Minecraft.java:735) at java.lang.Thread.run(Unknown Source) Caused by: cpw.mods.fml.common.LoaderException: java.lang.NoClassDefFoundError: mods/ComputerCraft/mod_ComputerCraft (wrong name: mod_ComputerCraft) at cpw.mods.fml.common.Loader.loadModClass(Loader.java:527) at cpw.mods.fml.common.Loader.attemptDirLoad(Loader.java:474) at cpw.mods.fml.common.Loader.attemptDirLoad(Loader.java:463) at cpw.mods.fml.common.Loader.attemptDirLoad(Loader.java:463) at cpw.mods.fml.common.Loader.load(Loader.java:385) ... 5 more Caused by: java.lang.NoClassDefFoundError: mods/ComputerCraft/mod_ComputerCraft (wrong name: mod_ComputerCraft) at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(Unknown Source) at java.security.SecureClassLoader.defineClass(Unknown Source) at java.net.URLClassLoader.defineClass(Unknown Source) at java.net.URLClassLoader.access$100(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Unknown Source) at cpw.mods.fml.common.Loader.loadModClass(Loader.java:494) ... 9 more --- END ERROR REPORT b8daa9b4 ----------