Hopper: java.lang.NullPointerException: Updating screen events

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-1866016/

Crash:

java.lang.NullPointerException: Updating screen events
	at bwa.b(SourceFile:501)
	at bwa.a(SourceFile:457)
	at buf.e(SourceFile:52)
	at buf.<init>(SourceFile:24)
	at bus.a(SourceFile:162)
	at bus.a(SourceFile:136)
	at bus.r(SourceFile:41)
	at bus.<init>(SourceFile:31)
	at bwa.f(SourceFile:364)
	at bwa.b(SourceFile:221)
	at bww.b(SourceFile:368)
	at bsn.a(SourceFile:807)
	at bvw.a(SourceFile:273)
	at bww.a(SourceFile:342)
	at bvw.a(SourceFile:350)
	at bww.k(SourceFile:405)
	at bww.p(SourceFile:382)

The following is the first clean report made public about this crash:

---- Minecraft Crash Report ----
// But it works on my machine.

Time: 08.08.14 19:42
Description: Updating screen events

java.lang.NullPointerException: Updating screen events
	at bwa.b(SourceFile:501)
	at bwa.a(SourceFile:457)
	at buf.e(SourceFile:52)
	at buf.<init>(SourceFile:24)
	at bus.a(SourceFile:162)
	at bus.a(SourceFile:136)
	at bus.r(SourceFile:41)
	at bus.<init>(SourceFile:31)
	at bwa.f(SourceFile:364)
	at bwa.b(SourceFile:221)
	at bww.b(SourceFile:368)
	at bsn.a(SourceFile:807)
	at bvw.a(SourceFile:273)
	at bww.a(SourceFile:342)
	at bvw.a(SourceFile:350)
	at bww.k(SourceFile:405)
	at bww.p(SourceFile:382)
	at bsn.r(SourceFile:1477)
	at bsn.as(SourceFile:875)
	at bsn.a(SourceFile:312)
	at net.minecraft.client.main.Main.main(SourceFile:120)


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

-- Head --
Stacktrace:
	at bwa.b(SourceFile:501)
	at bwa.a(SourceFile:457)
	at buf.e(SourceFile:52)
	at buf.<init>(SourceFile:24)
	at bus.a(SourceFile:162)
	at bus.a(SourceFile:136)
	at bus.r(SourceFile:41)
	at bus.<init>(SourceFile:31)
	at bwa.f(SourceFile:364)
	at bwa.b(SourceFile:221)
	at bww.b(SourceFile:368)
	at bsn.a(SourceFile:807)
	at bvw.a(SourceFile:273)
	at bww.a(SourceFile:342)
	at bvw.a(SourceFile:350)
	at bww.k(SourceFile:405)
	at bww.p(SourceFile:382)

-- Affected screen --
Details:
	Screen name: bwa
Stacktrace:
	at bsn.r(SourceFile:1477)
	at bsn.as(SourceFile:875)
	at bsn.a(SourceFile:312)
	at net.minecraft.client.main.Main.main(SourceFile:120)

-- System Details --
Details:
	Minecraft Version: 14w32d
	Operating System: Windows 7 (x86) version 6.1
	Java Version: 1.7.0_65, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
	Memory: 244154016 bytes (232 MB) / 382009344 bytes (364 MB) up to 523501568 bytes (499 MB)
	JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
	Launched Version: 14w32d
	LWJGL: 2.9.1
	OpenGL: GeForce GT 520/PCIe/SSE2 GL version 4.3.0, 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.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

	Using VBOs: No
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Packs: []
	Current Language: Deutsch (Deutschland)
	Profiler Position: N/A (disabled)

You can see this full report at http://hopper.minecraft.net/crashes/minecraft/MCX-1866016/70299709/