Minecraft Forums

Today I started up minecraft and I got this error.


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

Minecraft has stopped running because it encountered a problem; Failed to start game

A full error report has been saved to C:\Users\Dave\.minecraft\crash-reports\crash-2013-03-27_19.13.46-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 1e13e498 --------
Full report at:
C:\Users\Dave\.minecraft\crash-reports\crash-2013-03-27_19.13.46-client.txt
Please show that file to Mojang, NOT just this screen!

Generated 3/27/13 7:13 PM

-- System Details --
Details:
Minecraft Version: 1.5.1
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_15, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 459926920 bytes (438 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: GeForce 9600 GT/PCIe/SSE2 GL version 3.3.0, NVIDIA Corporation
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

java.lang.NullPointerException
at javax.imageio.ImageIO.write(Unknown Source)
at bip.b(SourceFile:278)
at bis.b(SourceFile:154)
at bgf.d(SourceFile:350)
at net.minecraft.client.Minecraft.a(SourceFile:298)
at avv.a(SourceFile:56)
at net.minecraft.client.Minecraft.run(SourceFile:507)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT ad75fd5b ----------

also this


---- Minecraft Crash Report ----
// Hey, that tickles! Hehehe!

Time: 3/27/13 7:13 PM
Description: Failed to start game

java.lang.NullPointerException
at javax.imageio.ImageIO.write(Unknown Source)
at bip.b(SourceFile:278)
at bis.b(SourceFile:154)
at bgf.d(SourceFile:350)
at net.minecraft.client.Minecraft.a(SourceFile:298)
at avv.a(SourceFile:56)
at net.minecraft.client.Minecraft.run(SourceFile:507)
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: 1.5.1
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_15, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 459926920 bytes (438 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: GeForce 9600 GT/PCIe/SSE2 GL version 3.3.0, NVIDIA Corporation
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

so yeah what happened it played just fine the other day

The only thing that was different was that I started up minecraft while Steam was updateing.

thanks you for your time and effort