---- Minecraft Crash Report ---- // I bet Cylons wouldn't have this problem. Time: 7/1/13 4:40 PM Description: Updating screen events java.lang.ClassFormatError: Truncated class file at java.lang.ClassLoader.findBootstrapClass(Native Method) at java.lang.ClassLoader.findBootstrapClassOrNull(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at bli.a(SourceFile:259) at avv.a(SourceFile:71) at bli.a(SourceFile:503) at avv.d(SourceFile:125) at avv.m(SourceFile:109) at atn.k(SourceFile:1157) at atn.S(SourceFile:662) at atn.d(SourceFile:618) at net.minecraft.client.main.Main.main(SourceFile:101) A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- Head -- Stacktrace: at java.lang.ClassLoader.findBootstrapClass(Native Method) at java.lang.ClassLoader.findBootstrapClassOrNull(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at bli.a(SourceFile:259) at avv.a(SourceFile:71) at bli.a(SourceFile:503) at avv.d(SourceFile:125) at avv.m(SourceFile:109) -- Affected screen -- Details: Screen name: bli Stacktrace: at atn.k(SourceFile:1157) at atn.S(SourceFile:662) at atn.d(SourceFile:618) at net.minecraft.client.main.Main.main(SourceFile:101) -- System Details -- Details: Minecraft Version: 1.6.1 Operating System: Windows XP (x86) version 5.1 Java Version: 1.7.0_25, Oracle Corporation Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation Memory: 32410432 bytes (30 MB) / 67637248 bytes (64 MB) up to 1037959168 bytes (989 MB) JVM Flags: 1 total; -Xmx1G AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used Suspicious classes: No suspicious classes found. IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0 Launched Version: 1.6.1 LWJGL: 2.9.0 OpenGL: Intel Bear Lake B GL version 1.4.0 - Build 7.14.10.4957, Intel Is Modded: Probably not. Jar signature remains and client brand is untouched. Type: Client (map_client.txt) Resource Pack: Default Profiler Position: N/A (disabled) Vec3 Pool Size: ~~ERROR~~ NullPointerException: null