I was tyring the TWILIGHT FOREST MOD with FORGE and for osme reason I got this error report:

      Minecraft has crashed!            ----------------------     

Minecraft has stopped running because it encountered a problem; Failed to start game This error has been saved to C:\Users\Hassan\AppData\Roaming\.minecraft\crash-reports\crash-2012-09-21_20.35.54-client.txt for your convenience. Please include a copy of this file if you report this crash to anyone.

--- BEGIN ERROR REPORT fc046e5d -------- Generated 21/09/12 8:35 PM

- Minecraft Version: 1.3.2 - Operating System: Windows Vista (x86) version 6.0 - Java Version: 1.7.0_05, Oracle Corporation - Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation - Memory: 461735440 bytes (440 MB) / 519110656 bytes (495 MB) up to 1037959168 bytes (989 MB) - JVM Flags: 2 total; -Xms512m -Xmx1024m - FML: FML v3.0.161.341 Minecraft Forge 4.0.0.239 3 mods loaded, 3 mods active  FML [Forge Mod Loader] (coremods) Unloaded->Constructed  Forge [Minecraft Forge] (coremods) Unloaded->Constructed  TwilightForest [The Twilight Forest] (minecraft.jar) Unloaded->Errored - LWJGL: 2.4.2 - OpenGL: GeForce 8600 GT/PCI/SSE2 GL version 2.1.1, NVIDIA Corporation - Is Modded: Definitely; 'forge,fml' - Type: Client - Texture Pack: Default - Profiler Position: N/A (disabled)

cpw.mods.fml.common.LoaderException: java.lang.ClassNotFoundException: twilightforest.TwilightForestMod  at cpw.mods.fml.common.LoadController.transition(LoadController.java:102)  at cpw.mods.fml.common.Loader.loadMods(Loader.java:443)  at cpw.mods.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:141)  at net.minecraft.client.Minecraft.a(Minecraft.java:405)  at net.minecraft.client.Minecraft.run(Minecraft.java:737)  at java.lang.Thread.run(Unknown Source) Caused by: java.lang.ClassNotFoundException: twilightforest.TwilightForestMod  at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:100)  at java.lang.ClassLoader.loadClass(Unknown Source)  at java.lang.ClassLoader.loadClass(Unknown Source)  at cpw.mods.fml.common.ModClassLoader.loadClass(ModClassLoader.java:57)  at java.lang.Class.forName0(Native Method)  at java.lang.Class.forName(Unknown Source)  at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:343)  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)  at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)  at java.lang.reflect.Method.invoke(Unknown Source)  at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:69)  at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)  at com.google.common.eventbus.EventBus.dispatch(EventBus.java:317)  at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:300)  at com.google.common.eventbus.EventBus.post(EventBus.java:268)  at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:124)  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)  at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)  at java.lang.reflect.Method.invoke(Unknown Source)  at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:69)  at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)  at com.google.common.eventbus.EventBus.dispatch(EventBus.java:317)  at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:300)  at com.google.common.eventbus.EventBus.post(EventBus.java:268)  at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:81)  at cpw.mods.fml.common.Loader.loadMods(Loader.java:442)  ... 4 more Caused by: java.lang.NullPointerException  at org.objectweb.asm.ClassReader.<init>(Unknown Source)  at cpw.mods.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:27)  at cpw.mods.fml.relauncher.RelaunchClassLoader.runTransformers(RelaunchClassLoader.java:142)  at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:93)  ... 31 more --- END ERROR REPORT 248865c0 ----------

Any solutions?