Uhoh,it looks like the game has crashed! Sorry for the inconvience

We think your game may be modded, and as such we can't accept this crash report.
However, if you dou indeed use mods, please send this to the mod authors to take a look at!
---- Minecraft Crash Report ----
// Why did you do that?
Time: 8.5.14 10:11
Description: 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:61)
at bll.a(SourceFile:48)
at jt.a(SourceFile:41)
at jt.a(SourceFile:10)
at ej.a(SourceFile:174)
at bct.c(SourceFile:78)
at ban.p(SourceFile:1343)
at ban.ak(SourceFile:774)
at ban.f(SourceFile:728)
at net.minecraft.client.main.Main.main(SourceFile:148)
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:61)
at bll.a(SourceFile:48)
at jt.a(SourceFile:41)
at jt.a(SourceFile:10)
at ej.a(SourceFile:174)
at bct.c(SourceFile:78)
-- Affected screen --
Details:
Screen name: bct
Stacktrace:
at ban.p(SourceFile:1343)
at ban.ak(SourceFile:774)
at ban.f(SourceFile:728)
at net.minecraft.client.main.Main.main(SourceFile:148)
-- System Details --
Details:
Minecraft Version: 1.7.9
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_55, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
Memory: 46957960 bytes (44 MB) / 81616896 bytes (77 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: 1.7.9
LWJGL: 2.9.1
OpenGL: GeForce 9800 GT/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: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs: []
Current Language: Čeština (Česko)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Anisotropic Filtering: Off (1)
PLEASE HELP ME
