Report:
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Description: Failed to start game

java.lang.NullPointerException
at javax.imageio.ImageIO.write(Unknown Source)
at bem.c(SourceFile:312)
at beo.b(SourceFile:134)
at bcd.c(SourceFile:429)
at net.minecraft.client.Minecraft.a(SourceFile:296)
at atr.a(SourceFile:56)
at net.minecraft.client.Minecraft.run(SourceFile:506)
at java.lang.Thread.run(Unknown Source)

A detailed walkthrough of the error, its code path and all known details is as follows:
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– System Details –
Details:
Minecraft Version: 13w02a
Operating System: Windows 8 (amd64) version 6.2
Java Version: 1.7.0_10, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 450411640 bytes (429 MB) / 514523136 bytes (490 MB) up to 954466304 bytes (910 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 GTX 460/PCIe/SSE2 GL version 4.3.0, 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
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I've tried re-installing java, deleting .minecraft and re-downloading the snapshot. No luck.

Minecraft on older versions (1.4.7 and below) works fine.

Basically, I load up MC, turn it on, it shows the Mojang logo for a few seconds, and BOOM! Crash.