помогите с игрой minecrafte там ваще надо!

вот запускаю игру выскакивает! : Minecraft has crashed!
----------------------

Minecraft has stopped running because it encountered a problem; Unexpected error

A full error report has been saved to C:\Users\Денис\AppData\Roaming\.minecraft\crash-reports\crash-2012-11-28_14.54.59-client.txt - Please include a copy of that file (Not this screen!) if you report this crash to anyone; without it, they will not be able to help fix the crash

--- BEGIN ERROR REPORT bbf9d819 --------
Full report at:
C:\Users\Денис\AppData\Roaming\.minecraft\crash-reports\crash-2012-11-28_14.54.59-client.txt
Please show that file to Mojang, NOT just this screen!

Generated 28.11.12 14:54

-- System Details --
Details:
Minecraft Version: 1.4.5
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_09, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 433398248 bytes (413 MB) / 518979584 bytes (494 MB) up to 1037959168 bytes (989 MB)
JVM Flags: 2 total; -Xms512m -Xmx1024m
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
LWJGL: 2.4.2
OpenGL: ~~ERROR~~ NullPointerException: null
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Texture Pack: Default
Profiler Position: N/A (disabled)
Vec3 Pool Size: ~~ERROR~~ NullPointerException: null[failed to get system properties (java.lang.NullPointerException)]

java.lang.NullPointerException
at org.lwjgl.opengl.GL11.glGetError(GL11.java:1279)
at net.minecraft.client.Minecraft.d(SourceFile:464)
at net.minecraft.client.Minecraft.J(SourceFile:586)
at net.minecraft.client.Minecraft.run(SourceFile:534)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT 10a452c5 ----------