Error Minecraft

---- Minecraft Crash Report ----// Oops.
Time: 18.09.14 18:03Description: Ticking screen
java.lang.NullPointerException: Ticking screen	at com.mojang.util.UUIDTypeAdapter.fromUUID(UUIDTypeAdapter.java:22)	at com.mojang.util.UUIDTypeAdapter.write(UUIDTypeAdapter.java:13)	at com.mojang.util.UUIDTypeAdapter.write(UUIDTypeAdapter.java:10)	at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.write(TypeAdapterRuntimeTypeWrapper.java:68)	at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.write(ReflectiveTypeAdapterFactory.java:89)	at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.write(ReflectiveTypeAdapterFactory.java:195)	at com.google.gson.Gson.toJson(Gson.java:593)	at com.google.gson.Gson.toJson(Gson.java:572)	at com.google.gson.Gson.toJson(Gson.java:527)	at com.google.gson.Gson.toJson(Gson.java:507)	at com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:54)	at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.joinServer(YggdrasilMinecraftSessionService.java:76)	at net.minecraft.client.fj.a(fj.java)	at net.minecraft.g1.a(g1.java)	at net.minecraft.g1.a(g1.java)	at net.minecraft.i.b(i.java)	at net.minecraft.client.hf.g(hf.java)	at net.minecraft.client.v.A(v.java)	at net.minecraft.client.v.n(v.java)	at net.minecraft.client.v.m(v.java)	at net.minecraft.client.main.Main.main(Main.java)


A detailed walkthrough of the error, its code path and all known details is as follows:---------------------------------------------------------------------------------------
-- Head --Stacktrace:	at com.mojang.util.UUIDTypeAdapter.fromUUID(UUIDTypeAdapter.java:22)	at com.mojang.util.UUIDTypeAdapter.write(UUIDTypeAdapter.java:13)	at com.mojang.util.UUIDTypeAdapter.write(UUIDTypeAdapter.java:10)	at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.write(TypeAdapterRuntimeTypeWrapper.java:68)	at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.write(ReflectiveTypeAdapterFactory.java:89)	at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.write(ReflectiveTypeAdapterFactory.java:195)	at com.google.gson.Gson.toJson(Gson.java:593)	at com.google.gson.Gson.toJson(Gson.java:572)	at com.google.gson.Gson.toJson(Gson.java:527)	at com.google.gson.Gson.toJson(Gson.java:507)	at com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:54)	at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.joinServer(YggdrasilMinecraftSessionService.java:76)	at net.minecraft.client.fj.a(fj.java)	at net.minecraft.g1.a(g1.java)	at net.minecraft.g1.a(g1.java)	at net.minecraft.i.b(i.java)	at net.minecraft.client.hf.g(hf.java)
-- Affected screen --Details:	Screen name: net.minecraft.client.hfStacktrace:	at net.minecraft.client.v.A(v.java)	at net.minecraft.client.v.n(v.java)	at net.minecraft.client.v.m(v.java)	at net.minecraft.client.main.Main.main(Main.java)
-- System Details --Details:	Minecraft Version: 1.7.10	Operating System: Windows 7 (x86) version 6.1	Java Version: 1.7.0_67, Oracle Corporation	Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation	Memory: 45245648 bytes (43 MB) / 75644928 bytes (72 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: 0, tallocated: 0	Launched Version: huzuni	LWJGL: 2.9.1	OpenGL: GeForce GT 120/PCIe/SSE2 GL version 3.3.0, NVIDIA Corporation	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: Very likely; Jar signature invalidated	Type: Client (map_client.txt)	Resource Packs: [meinetexturen.zip]	Current Language: Deutsch (Deutschland)	Profiler Position: N/A (disabled)	Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used	Anisotropic Filtering: Off (1)