Hopper: java.lang.NoClassDefFoundError: com/google/gson/internal/ConstructorConstructor$3

java.lang.NoClassDefFoundError: com/google/gson/internal/ConstructorConstructor$3
	at com.google.gson.internal.ConstructorConstructor.newDefaultConstructor(ConstructorConstructor.java:99)
	at com.google.gson.internal.ConstructorConstructor.get(ConstructorConstructor.java:79)
	at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:71)
	at com.google.gson.Gson.getAdapter(Gson.java:356)
	at com.google.gson.Gson.toJson(Gson.java:585)
	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:41)
	at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.joinServer(YggdrasilMinecraftSessionService.java:32)
	at bit.a(SourceFile:47)
	at jh.a(SourceFile:41)
	at jh.a(SourceFile:10)
	at ef.a(SourceFile:164)
	at bbe.c(SourceFile:76)

---- Minecraft Crash Report ----
// Ouch. That hurt :(

Time: 10/27/13 2:09 AM
Description: Ticking screen

java.lang.NoClassDefFoundError: com/google/gson/internal/ConstructorConstructor$3
	at com.google.gson.internal.ConstructorConstructor.newDefaultConstructor(ConstructorConstructor.java:99)
	at com.google.gson.internal.ConstructorConstructor.get(ConstructorConstructor.java:79)
	at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:71)
	at com.google.gson.Gson.getAdapter(Gson.java:356)
	at com.google.gson.Gson.toJson(Gson.java:585)
	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:41)
	at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.joinServer(YggdrasilMinecraftSessionService.java:32)
	at bit.a(SourceFile:47)
	at jh.a(SourceFile:41)
	at jh.a(SourceFile:10)
	at ef.a(SourceFile:164)
	at bbe.c(SourceFile:76)
	at azd.o(SourceFile:1318)
	at azd.ad(SourceFile:753)
	at azd.e(SourceFile:704)
	at net.minecraft.client.main.Main.main(SourceFile:103)
Caused by: java.lang.ClassNotFoundException: com.google.gson.internal.ConstructorConstructor$3
	at java.net.URLClassLoader$1.run(Unknown Source)
	at java.net.URLClassLoader$1.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	... 19 more


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

-- Head --
Stacktrace:
	at com.google.gson.internal.ConstructorConstructor.newDefaultConstructor(ConstructorConstructor.java:99)
	at com.google.gson.internal.ConstructorConstructor.get(ConstructorConstructor.java:79)
	at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(ReflectiveTypeAdapterFactory.java:71)
	at com.google.gson.Gson.getAdapter(Gson.java:356)
	at com.google.gson.Gson.toJson(Gson.java:585)
	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:41)
	at com.mojang.authlib.yggdrasil.YggdrasilMinecraftSessionService.joinServer(YggdrasilMinecraftSessionService.java:32)
	at bit.a(SourceFile:47)
	at jh.a(SourceFile:41)
	at jh.a(SourceFile:10)
	at ef.a(SourceFile:164)
	at bbe.c(SourceFile:76)

-- Affected screen --
Details:
	Screen name: bbe
Stacktrace:
	at azd.o(SourceFile:1318)
	at azd.ad(SourceFile:753)
	at azd.e(SourceFile:704)
	at net.minecraft.client.main.Main.main(SourceFile:103)

-- System Details --
Details:
	Minecraft Version: 1.7.2
	Operating System: Windows 7 (x86) version 6.1
	Java Version: 1.7.0_17, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
	Memory: 48170608 bytes (45 MB) / 82980864 bytes (79 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: 1.7.2
	LWJGL: 2.9.0
	OpenGL: GeForce GTX 660 Ti/PCIe/SSE2 GL version 4.3.0, NVIDIA Corporation
	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)