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Everytime I join multiplayer, my client crashes the second i move. I am on the latest snapshot, but so is the server.


--- BEGIN ERROR REPORT ea5d56dc --------
Generated 9/21/12 6:01 PM

- Minecraft Version: 12w38b
- Operating System: Windows 7 (amd64) version 6.1
- Java Version: 1.7.0_01, Oracle Corporation
- Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
- Memory: 368606368 bytes (351 MB) / 514523136 bytes (490 MB) up to 954466304 bytes (910 MB)
- JVM Flags: 2 total; -Xms512m -Xmx1024m
- LWJGL: 2.4.2
- OpenGL: GeForce GT 555M/PCI/SSE2 GL version 4.1.0, NVIDIA Corporation
- Is Modded: Probably not
- Type: Client
- Texture Pack: Default
- Profiler Position: N/A (disabled)
- World MpServer Entities: 43 total; [avk['Jeshinyuman'/7565, l='MpServer', x=422.31, y=64.62, z=792.52], oq['Slime'/7648, l='MpServer', x=398.38, y=12.00, z=802.38], nf['Ocelot'/7649, l='MpServer', x=393.09, y=64.00, z=829.47], nb['Chicken'/7660, l='MpServer', x=459.50, y=64.00, z=864.50], nb['Chicken'/7661, l='MpServer', x=462.50, y=69.00, z=866.50], nb['Chicken'/7658, l='MpServer', x=461.50, y=68.00, z=866.50], nb['Chicken'/7659, l='MpServer', x=460.50, y=67.00, z=866.50], mz['Bat'/7669, l='MpServer', x=499.25, y=56.00, z=794.25], ot['Zombie'/7670, l='MpServer', x=498.47, y=70.00, z=814.06], mz['Bat'/7664, l='MpServer', x=502.75, y=40.55, z=763.24], nb['Chicken'/7673, l='MpServer', x=499.50, y=71.00, z=859.50], nb['Chicken'/7672, l='MpServer', x=501.44, y=66.00, z=826.63], nb['Chicken'/7675, l='MpServer', x=499.50, y=73.00, z=862.50], nb['Chicken'/7674, l='MpServer', x=501.50, y=64.00, z=860.50], oe['Creeper'/7620, l='MpServer', x=349.47, y=50.00, z=837.41], or['Spider'/7621, l='MpServer', x=349.59, y=50.00, z=838.81], ot['Zombie'/7618, l='MpServer', x=346.75, y=37.00, z=839.88], ot['Zombie'/7616, l='MpServer', x=345.78, y=47.00, z=835.50], op['Skeleton'/7630, l='MpServer', x=359.63, y=47.00, z=830.16], oe['Creeper'/7631, l='MpServer', x=359.50, y=48.00, z=825.50], ng['Pig'/7628, l='MpServer', x=365.53, y=73.00, z=793.47], op['Skeleton'/7629, l='MpServer', x=359.31, y=47.00, z=827.44], nb['Chicken'/7627, l='MpServer', x=361.50, y=70.00, z=794.50], ot['Zombie'/7624, l='MpServer', x=347.63, y=22.00, z=868.94], ot['Zombie'/7634, l='MpServer', x=352.13, y=38.00, z=851.50], mz['Bat'/7633, l='MpServer', x=356.75, y=18.10, z=834.75], op['Skeleton'/7632, l='MpServer', x=358.50, y=48.00, z=824.50], mz['Bat'/7644, l='MpServer', x=381.75, y=32.00, z=846.42], nf['Ocelot'/7643, l='MpServer', x=369.32, y=78.74, z=819.65], op['Skeleton'/7642, l='MpServer', x=376.13, y=70.00, z=827.75], nh['Sheep'/7641, l='MpServer', x=382.50, y=63.00, z=759.47], ot['Zombie'/7611, l='MpServer', x=344.50, y=76.00, z=814.50], or['Spider'/7610, l='MpServer', x=343.16, y=33.00, z=809.14], op['Skeleton'/7612, l='MpServer', x=347.30, y=35.00, z=824.70], or['Spider'/7615, l='MpServer', x=346.50, y=76.00, z=817.50], mz['Bat'/7614, l='MpServer', x=351.25, y=38.10, z=818.50], oa['Minecart'/5893, l='MpServer', x=421.47, y=63.85, z=750.50], ot['Zombie'/7771, l='MpServer', x=353.50, y=36.00, z=830.50], ot['Zombie'/7772, l='MpServer', x=345.50, y=36.00, z=824.50], ot['Zombie'/7773, l='MpServer', x=345.50, y=36.00, z=823.50], nb['Chicken'/5851, l='MpServer', x=387.22, y=67.00, z=722.81], ot['Zombie'/7797, l='MpServer', x=349.50, y=37.00, z=842.50], mz['Bat'/7843, l='MpServer', x=473.50, y=25.00, z=723.50]]
- World MpServer Players: 1 total; [avk['Jeshinyuman'/7565, l='MpServer', x=422.31, y=64.62, z=792.52]]
- World MpServer Chunk Stats: MultiplayerChunkCache: 235
- Forced Entities: 43 total; [avk['Jeshinyuman'/7565, l='MpServer', x=422.31, y=64.62, z=792.52], ot['Zombie'/7771, l='MpServer', x=353.50, y=36.00, z=830.50], ot['Zombie'/7772, l='MpServer', x=345.50, y=36.00, z=824.50], oq['Slime'/7648, l='MpServer', x=398.38, y=12.00, z=802.38], ot['Zombie'/7773, l='MpServer', x=345.50, y=36.00, z=823.50], nf['Ocelot'/7649, l='MpServer', x=393.09, y=64.00, z=829.47], nb['Chicken'/7660, l='MpServer', x=459.50, y=64.00, z=864.50], nb['Chicken'/7661, l='MpServer', x=462.50, y=69.00, z=866.50], nb['Chicken'/7658, l='MpServer', x=461.50, y=68.00, z=866.50], nb['Chicken'/7659, l='MpServer', x=460.50, y=67.00, z=866.50], mz['Bat'/7669, l='MpServer', x=499.25, y=56.00, z=794.25], ot['Zombie'/7670, l='MpServer', x=498.47, y=70.00, z=814.06], mz['Bat'/7664, l='MpServer', x=502.75, y=40.55, z=763.24], nb['Chicken'/5851, l='MpServer', x=387.22, y=67.00, z=722.81], oa['Minecart'/5893, l='MpServer', x=421.47, y=63.85, z=750.50], ot['Zombie'/7611, l='MpServer', x=344.50, y=76.00, z=814.50], or['Spider'/7610, l='MpServer', x=343.16, y=33.00, z=809.14], nb['Chicken'/7673, l='MpServer', x=499.50, y=71.00, z=859.50], op['Skeleton'/7612, l='MpServer', x=347.30, y=35.00, z=824.70], nb['Chicken'/7672, l='MpServer', x=501.44, y=66.00, z=826.63], or['Spider'/7615, l='MpServer', x=346.50, y=76.00, z=817.50], nb['Chicken'/7675, l='MpServer', x=499.50, y=73.00, z=862.50], mz['Bat'/7614, l='MpServer', x=351.25, y=38.10, z=818.50], nb['Chicken'/7674, l='MpServer', x=501.50, y=64.00, z=860.50], oe['Creeper'/7620, l='MpServer', x=349.47, y=50.00, z=837.41], or['Spider'/7621, l='MpServer', x=349.59, y=50.00, z=838.81], ot['Zombie'/7618, l='MpServer', x=346.75, y=37.00, z=839.88], ot['Zombie'/7616, l='MpServer', x=345.78, y=47.00, z=835.50], op['Skeleton'/7630, l='MpServer', x=359.63, y=47.00, z=830.16], oe['Creeper'/7631, l='MpServer', x=359.50, y=48.00, z=825.50], ng['Pig'/7628, l='MpServer', x=365.53, y=73.00, z=793.47], op['Skeleton'/7629, l='MpServer', x=359.31, y=47.00, z=827.44], nb['Chicken'/7627, l='MpServer', x=361.50, y=70.00, z=794.50], ot['Zombie'/7624, l='MpServer', x=347.63, y=22.00, z=868.94], ot['Zombie'/7797, l='MpServer', x=349.50, y=37.00, z=842.50], mz['Bat'/7843, l='MpServer', x=473.50, y=25.00, z=723.50], ot['Zombie'/7634, l='MpServer', x=352.13, y=38.00, z=851.50], mz['Bat'/7633, l='MpServer', x=356.75, y=18.10, z=834.75], op['Skeleton'/7632, l='MpServer', x=358.50, y=48.00, z=824.50], mz['Bat'/7644, l='MpServer', x=381.75, y=32.00, z=846.42], nf['Ocelot'/7643, l='MpServer', x=369.32, y=78.74, z=819.65], op['Skeleton'/7642, l='MpServer', x=376.13, y=70.00, z=827.75], nh['Sheep'/7641, l='MpServer', x=382.50, y=63.00, z=759.47]]
- Retry Entities: 0 total; []

java.lang.NullPointerException
at bbf.b(SourceFile:186)
at bbd.a(SourceFile:62)
at oa.j_(SourceFile:265)
at vs.a(SourceFile:1214)
at vs.g(SourceFile:1193)
at vs.h(SourceFile:1118)
at net.minecraft.client.Minecraft.l(SourceFile:1266)
at net.minecraft.client.Minecraft.J(SourceFile:581)
at net.minecraft.client.Minecraft.run(SourceFile:533)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT a5903cd4 ----------

Is your minecraft modded? It may have something to do with mods you have installed. Have you played singleplayer? Does it work?