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after i try to open a world / a server my pixelmon crash (btw i use ATLauncher) when i open the crash log this what i say:

---- Minecraft Crash Report ----
// My bad.

Time: 5/11/15 3:04 PM
Description: Unexpected error

java.lang.NoSuchMethodError: com.mojang.authlib.minecraft.MinecraftProfileTexture.<init>(Ljava/lang/String;)V
at net.minecraft.client.entity.AbstractClientPlayer.<init>(AbstractClientPlayer.java:46)
at net.minecraft.client.entity.EntityPlayerSP.<init>(EntityPlayerSP.java:79)
at net.minecraft.client.entity.EntityClientPlayerMP.<init>(SourceFile:36)
at net.minecraft.client.multiplayer.PlayerControllerMP.func_147493_a(PlayerControllerMP.java:399)
at net.minecraft.client.Minecraft.func_71353_a(Minecraft.java:2215)
at net.minecraft.client.Minecraft.func_71403_a(Minecraft.java:2135)
at net.minecraft.client.network.NetHandlerPlayClient.func_147282_a(NetHandlerPlayClient.java:239)
at net.minecraft.network.play.server.S01PacketJoinGame.func_148833_a(SourceFile:70)
at net.minecraft.network.play.server.S01PacketJoinGame.func_148833_a(SourceFile:13)
at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212)
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:2050)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:962)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:887)
at net.minecraft.client.main.Main.main(SourceFile:148)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

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

-- Head --
Stacktrace:
at net.minecraft.client.entity.AbstractClientPlayer.<init>(AbstractClientPlayer.java:46)
at net.minecraft.client.entity.EntityPlayerSP.<init>(EntityPlayerSP.java:79)
at net.minecraft.client.entity.EntityClientPlayerMP.<init>(SourceFile:36)
at net.minecraft.client.multiplayer.PlayerControllerMP.func_147493_a(PlayerControllerMP.java:399)
at net.minecraft.client.Minecraft.func_71353_a(Minecraft.java:2215)
at net.minecraft.client.Minecraft.func_71403_a(Minecraft.java:2135)
at net.minecraft.client.network.NetHandlerPlayClient.func_147282_a(NetHandlerPlayClient.java:239)
at net.minecraft.network.play.server.S01PacketJoinGame.func_148833_a(SourceFile:70)
at net.minecraft.network.play.server.S01PacketJoinGame.func_148833_a(SourceFile:13)
at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212)

-- Affected level --
Details:
Level name: MpServer
All players: 0 total; []
Chunk stats: MultiplayerChunkCache: 0, 0
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (8,64,8), Chunk: (at 8,4,8 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 0 game time, 0 day time
Level dimension: 0
Level storage version: 0x00000 - Unknown?
Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: false
Forced entities: 0 total; []
Retry entities: 0 total; []
Server brand: ~~ERROR~~ NullPointerException: null
Server type: Integrated singleplayer server
Stacktrace:
at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:373)
at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2433)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:916)
at net.minecraft.client.main.Main.main(SourceFile:148)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.8.0_40, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 222239008 bytes (211 MB) / 684396544 bytes (652 MB) up to 2130051072 bytes (2031 MB)
JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -XX:-OmitStackTraceInFastThrow -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xms256M -Xmx2048M -XX:MetaspaceSize=256M
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
FML: MCP v9.05 FML v7.10.85.1230 Minecraft Forge 10.13.2.1230 Optifine OptiFine_1.7.10_HD_U_A4 8 mods loaded, 8 mods active
mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{7.10.85.1230} [Forge Mod Loader] (forge-1.7.10-10.13.2.1230-universal.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{10.13.2.1230} [Minecraft Forge] (forge-1.7.10-10.13.2.1230-universal.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BetterTitleScreen{1.7.10-1.1} [Better Title Screen] (BetterTitleScreen-1.7.10-1.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
CustomMainMenu{1.1} [Custom Main Menu] (CustomMainMenu-MC1.7.10-1.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
pixelmon{3.4.0} [Pixelmon] (Pixelmon-1.7.10-3.4.0-universal.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
ResourceLoader{1.0} [Resource Loader] (ResourceLoader-1.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
voxelmap{1.7.10} [VoxelMap No Radar] (voxelmapNoRadar-1.7.10-1.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Launched Version: 1.7.10
LWJGL: 2.9.1
OpenGL: ATI Mobility Radeon HD 4500 Series GL version 2.1.8787, ATI Technologies Inc.
GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because ARB_framebuffer_object 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: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Packs: []
Current Language: English (US)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Anisotropic Filtering: Off (1)

Pls help

-monobovo01

Please help guys i really wanna play pixelmon looks so cool

Also Try without other mods