Put the summary of the bug you're having here...
— Minecraft Crash Report ----
// My bad.

Time: 2/22/14 11:18 AM
Description: Updating screen events

java.lang.OutOfMemoryError: Java heap space
at java.util.Formatter.parse(Unknown Source)
at java.util.Formatter.format(Unknown Source)
at java.util.Formatter.format(Unknown Source)
at java.lang.String.format(Unknown Source)
at bsf.a(SourceFile:103)
at bsc.a(SourceFile:15)
at azi.a(SourceFile:1607)
at bcm.e(SourceFile:162)
at bcm.a(SourceFile:127)
at bcl.a(SourceFile:172)
at bcl.d(SourceFile:232)
at bcl.k(SourceFile:211)
at azi.p(SourceFile:1308)
at azi.ah(SourceFile:760)
at azi.f(SourceFile:711)
at net.minecraft.client.main.Main.main(SourceFile:152)

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

– Head –
Stacktrace:
at java.util.Formatter.parse(Unknown Source)
at java.util.Formatter.format(Unknown Source)
at java.util.Formatter.format(Unknown Source)
at java.lang.String.format(Unknown Source)
at bsf.a(SourceFile:103)
at bsc.a(SourceFile:15)
at azi.a(SourceFile:1607)
at bcm.e(SourceFile:162)
at bcm.a(SourceFile:127)
at bcl.a(SourceFile:172)
at bcl.d(SourceFile:232)
at bcl.k(SourceFile:211)

– Affected screen –
Details:
Screen name: bct
Stacktrace:
at azi.p(SourceFile:1308)
at azi.ah(SourceFile:760)
at azi.f(SourceFile:711)
at net.minecraft.client.main.Main.main(SourceFile:152)

– System Details –
Details:
Minecraft Version: 1.7.4
Operating System: Windows 8 (x86) version 6.2
Java Version: 1.7.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
Memory: 312422832 bytes (297 MB) / 518979584 bytes (494 MB) up to 518979584 bytes (494 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
Launched Version: 1.7.4
LWJGL: 2.9.1
OpenGL: Intel(R) HD Graphics 4600 GL version 4.0.0 - Build 9.18.10.3055, Intel
GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Anisotropic filtering is supported and maximum anisotropy is 16.
Shaders are available because OpenGL 2.1 is supported.

Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs: []
Current Language: English (US)
Profiler Position: N/A (disabled)
Vec3 Pool Size: ~_ERROR~ NullPointerException: null
Anisotropic Filtering: Off (1)
What I expected to happen was...:
Neon World should load when Neon World is selected.

What actually happened was...:
Screen Frozen at "Buiding Terrain" see attached screenshot.

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...
3. ...