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Minecraft keeps crashing on my friend's server!

Whenever I take 3 steps, this happens.

---- Minecraft Crash Report ----
// Why did you do that?

Time: 10/24/14 5:46 PM
Description: Unexpected error

java.lang.NullPointerException: Unexpected error
at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:192)
at com.google.common.collect.Lists.newArrayList(Lists.java:126)
at bcc.a(SourceFile:144)
at bcc.a(SourceFile:123)
at bcc.a(SourceFile:119)
at bjb.a(SourceFile:474)
at gj.a(SourceFile:38)
at gj.a(SourceFile:9)
at ej.a(SourceFile:174)
at bje.e(SourceFile:212)
at bao.p(SourceFile:1306)
at bao.ak(SourceFile:774)
at bao.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.google.common.base.Preconditions.checkNotNull(Preconditions.java:192)
at com.google.common.collect.Lists.newArrayList(Lists.java:126)
at bcc.a(SourceFile:144)
at bcc.a(SourceFile:123)
at bcc.a(SourceFile:119)
at bjb.a(SourceFile:474)
at gj.a(SourceFile:38)
at gj.a(SourceFile:9)
at ej.a(SourceFile:174)
at bje.e(SourceFile:212)

-- Affected level --
Details:
Level name: MpServer
All players: 5 total; [bjk['Sammy7789'/28086, l='MpServer', x=858.35, y=66.62, z=-2184.47], bll['IronMonkeyOP'/25344, l='MpServer', x=874.16, y=92.72, z=-2193.53], bll['cookiemonster188'/24430, l='MpServer', x=862.78, y=73.41, z=-2201.09], bll['xXviperXx_992k'/25359, l='MpServer', x=877.72, y=76.59, z=-2194.66], bll['catfootball'/28087, l='MpServer', x=860.50, y=65.00, z=-2187.09]]
Chunk stats: MultiplayerChunkCache: 441, 441
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (809,82,-2197), Chunk: (at 9,5,11 in 50,-138; contains blocks 800,0,-2208 to 815,255,-2193), Region: (1,-5; contains chunks 32,-160 to 63,-129, blocks 512,0,-2560 to 1023,255,-2049)
Level time: 12263924 game time, 12317026 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: survival (ID 0). Hardcore: false. Cheats: false
Forced entities: 9 total; [bjk['Sammy7789'/28086, l='MpServer', x=858.35, y=66.62, z=-2184.47], bll['IronMonkeyOP'/25344, l='MpServer', x=874.16, y=92.72, z=-2193.53], bll['cookiemonster188'/24430, l='MpServer', x=862.78, y=73.41, z=-2201.09], bll['xXviperXx_992k'/25359, l='MpServer', x=877.72, y=76.59, z=-2194.66], bll['cookiemonster188'/24430, l='MpServer', x=862.78, y=73.41, z=-2201.09], bll['catfootball'/28087, l='MpServer', x=860.50, y=65.00, z=-2187.09], bll['IronMonkeyOP'/25344, l='MpServer', x=874.16, y=92.72, z=-2193.53], bll['catfootball'/28087, l='MpServer', x=860.50, y=65.00, z=-2187.09], bll['xXviperXx_992k'/25359, l='MpServer', x=877.72, y=76.59, z=-2194.66]]
Retry entities: 0 total; []
Server brand: CraftBukkit
Server type: Non-integrated multiplayer server
Stacktrace:
at bjf.a(SourceFile:289)
at bao.b(SourceFile:1972)
at bao.f(SourceFile:742)
at net.minecraft.client.main.Main.main(SourceFile:148)

-- System Details --
Details:
Minecraft Version: 1.7.10
Operating System: Windows 8 (x86) version 6.2
Java Version: 1.7.0_71, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 96108832 bytes (91 MB) / 235495424 bytes (224 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
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
Launched Version: 1.7.10
LWJGL: 2.9.1
OpenGL: GeForce GT 430/PCIe/SSE2 GL version 4.4.0 NVIDIA 344.11, 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: 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)