"C:\Program Files\Java\jre6\bin\java.exe" -Xms560M -Xmx1024M -jar Minecraft.jar
Heap size: 989.0
Heap is big size
run complite
Use HD pack
update not found: old be8015a77c5cb9cf1417044cf585cf04, new: be8015a77c5cb9cf1417044cf585cf04
Exception in thread "Thread-2" java.lang.ClassFormatError: Truncated class file
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(Unknown Source)
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$000(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 java.lang.ClassLoader.loadClass(Unknown Source)
at net.minecraft.src.Block.<clinit>(Block.java:881)
at net.minecraft.src.Session.<clinit>(Session.java:26)
at net.minecraft.client.MinecraftApplet.init(MinecraftApplet.java:49)
at net.minecraft.Launcher.replace(Launcher.java:166)
at net.minecraft.Launcher$1.run(Launcher.java:108)

Черный экран при запуске игры,че делать? помогите плиз