---- Minecraft Crash Report ----
// There are four lights!

Time: 18/05/14 15:14
Description: Updating screen events

java.lang.NullPointerException: Updating screen events
    at bmu.b(SourceFile:497)
    at bmu.a(SourceFile:453)
    at bli.e(SourceFile:53)
    at bli.<init>(SourceFile:25)
    at blv.a(SourceFile:163)
    at blv.a(SourceFile:137)
    at blv.r(SourceFile:41)
    at blv.<init>(SourceFile:32)
    at bmu.g(SourceFile:362)
    at bmu.s_(SourceFile:220)
    at bnq.a(SourceFile:205)
    at bjp.a(SourceFile:726)
    at bmq.a(SourceFile:271)
    at bnq.a(SourceFile:180)
    at bmq.a(SourceFile:317)
    at bnq.d(SourceFile:242)
    at bnq.k(SourceFile:219)
    at bjp.p(SourceFile:1428)
    at bjp.ai(SourceFile:839)
    at bjp.f(SourceFile:793)
    at net.minecraft.client.main.Main.main(SourceFile:121)


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

-- Head --
Stacktrace:
    at bmu.b(SourceFile:497)
    at bmu.a(SourceFile:453)
    at bli.e(SourceFile:53)
    at bli.<init>(SourceFile:25)
    at blv.a(SourceFile:163)
    at blv.a(SourceFile:137)
    at blv.r(SourceFile:41)
    at blv.<init>(SourceFile:32)
    at bmu.g(SourceFile:362)
    at bmu.s_(SourceFile:220)
    at bnq.a(SourceFile:205)
    at bjp.a(SourceFile:726)
    at bmq.a(SourceFile:271)
    at bnq.a(SourceFile:180)
    at bmq.a(SourceFile:317)
    at bnq.d(SourceFile:242)
    at bnq.k(SourceFile:219)

-- Affected screen --
Details:
    Screen name: bmu
Stacktrace:
    at bjp.p(SourceFile:1428)
    at bjp.ai(SourceFile:839)
    at bjp.f(SourceFile:793)
    at net.minecraft.client.main.Main.main(SourceFile:121)

-- System Details --
Details:
    Minecraft Version: 14w20b
    Operating System: Windows 8.1 (amd64) version 6.3
    Java Version: 1.7.0_55, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 227737760 bytes (217 MB) / 383254528 bytes (365 MB) up to 954728448 bytes (910 MB)
    JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
    IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
    Launched Version: 14w20b
    LWJGL: 2.9.1
    OpenGL: GeForce GTX 660M/PCIe/SSE2 GL version 4.4.0, NVIDIA Corporation
    GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
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)
    Anisotropic Filtering: Off (1)