Minecraft Forums

Hey guys, when I open Minecraft today, everything works fine and smooth, I load my map and it says, 'building terrain', it runs smoothly until it says 'Downloading Terrain' and then it Minecraft crashes and gives out this report :


---- Minecraft Crash Report ----
// I let you down. Sorry

Time: 11/19/12 7:18 PM
Description: Unexpected error

java.lang.ArrayIndexOutOfBoundsException: -4
at a.a(SourceFile:317)
at a.a(SourceFile:304)
at net.minecraft.client.Minecraft.l(SourceFile:1088)
at net.minecraft.client.Minecraft.J(SourceFile:582)
at net.minecraft.client.Minecraft.run(SourceFile:534)
at java.lang.Thread.run(Unknown Source)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
Minecraft Version: 1.4.4
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_07, Oracle Corporation
Java VM Version: Java HotSpot™ Client VM (mixed mode, sharing), Oracle Corporation
Memory: 30296 bytes (0 MB) / 259522560 bytes (247 MB) up to 259522560 bytes (247 MB)
JVM Flags: 0 total;
AABB Pool Size: 23 (1288 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Suspicious classes: IWrUpdater, Config, WrUpdates, ...]
IntCache: cache: 2, tcache: 0, allocated: 1, tallocated: 63
LWJGL: 2.4.2
OpenGL: Intel 965/963 Graphics Media Accelerator GL version 2.0.0 - Build 8.14.10.1930, Intel
Is Modded: Very likely; Jar signature invalidated
Type: Client (map_client.txt)
Texture Pack: Default
Profiler Position: N/A (disabled)
Vec3 Pool Size: ~~ERROR~~ NullPointerException: null


Help would be greatly appreciated
And one more thing, the only mod that I'm using is Optifine 1.4.4 HD D1