As soon as I log onto the server, mine craft crashes.

– Head –
Stacktrace:
at blq.a(SourceFile:236)
at bll.b(SourceFile:592)
at bll.a(SourceFile:1081)

– Affected level –
Details:
Level name: MpServer
All players: 1 total; [bje['TheCavy7'/793700, l='MpServer', x=4351.32, y=64.62, z=-1373.45]]
Chunk stats: MultiplayerChunkCache: 80, 80
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (4367,63,-1381), Chunk: (at 15,3,11 in 272,-87; contains blocks 4352,0,-1392 to 4367,255,-1377), Region: (8,-3; contains chunks 256,-96 to 287,-65, blocks 4096,0,-1536 to 4607,255,-1025)
Level time: 767545640 game time, 797107938 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: 47 total; [uq['Bat'/793715, l='MpServer', x=4353.56, y=38.09, z=-1377.13], bje['TheCavy7'/793700, l='MpServer', x=4351.32, y=64.62, z=-1373.45], wx['Skeleton'/793714, l='MpServer', x=4367.66, y=17.00, z=-1389.75], xc['Zombie'/793713, l='MpServer', x=4366.50, y=17.00, z=-1391.50], xc['Zombie'/793712, l='MpServer', x=4367.50, y=17.00, z=-1391.50], wx['Skeleton'/793719, l='MpServer', x=4323.50, y=35.00, z=-1330.50], wx['Skeleton'/793718, l='MpServer', x=4381.53, y=34.00, z=-1363.91], wx['Skeleton'/793717, l='MpServer', x=4382.50, y=34.00, z=-1366.50], wl['Creeper'/793716, l='MpServer', x=4350.84, y=49.00, z=-1405.13], xc['Zombie'/793723, l='MpServer', x=4304.50, y=22.00, z=-1393.50], wl['Creeper'/793722, l='MpServer', x=4308.50, y=11.00, z=-1392.50], wx['Skeleton'/793721, l='MpServer', x=4305.50, y=30.00, z=-1328.50], uu['Horse'/793720, l='MpServer', x=4330.78, y=63.00, z=-1397.94], wx['Skeleton'/793727, l='MpServer', x=4380.50, y=27.00, z=-1334.50], wl['Creeper'/793726, l='MpServer', x=4377.50, y=27.00, z=-1335.50], rg['entity.LeashKnot.name'/793776, l='MpServer', x=4339.50, y=63.50, z=-1372.50], vu['Boat'/793725, l='MpServer', x=4376.75, y=63.46, z=-1397.34], rg['entity.LeashKnot.name'/793777, l='MpServer', x=4332.50, y=63.50, z=-1398.50], uq['Bat'/793724, l='MpServer', x=4378.25, y=19.97, z=-1402.41], rn['Painting'/793702, l='MpServer', x=4344.06, y=61.00, z=-1371.00], uu['Horse'/793703, l='MpServer', x=4340.00, y=63.00, z=-1369.94], uq['Bat'/793701, l='MpServer', x=4349.44, y=38.10, z=-1367.13], vw['item.tile.sapling.oak'/793706, l='MpServer', x=4331.09, y=63.13, z=-1365.72], vw['item.tile.sapling.oak'/793707, l='MpServer', x=4330.88, y=63.13, z=-1369.00], wx['Skeleton'/793704, l='MpServer', x=4358.50, y=47.00, z=-1370.09], uq['Bat'/793705, l='MpServer', x=4353.13, y=38.10, z=-1375.63], uq['Bat'/793710, l='MpServer', x=4346.66, y=39.75, z=-1381.75], xc['Zombie'/793711, l='MpServer', x=4367.41, y=17.00, z=-1390.66], uq['Bat'/793708, l='MpServer', x=4346.38, y=39.09, z=-1377.75], wx['Skeleton'/793709, l='MpServer', x=4336.31, y=40.00, z=-1377.50], wl['Creeper'/793752, l='MpServer', x=4398.50, y=44.00, z=-1334.50], rn['Painting'/793702, l='MpServer', x=4344.06, y=61.00, z=-1371.00], uq['Bat'/793754, l='MpServer', x=4380.44, y=26.06, z=-1327.94], wx['Skeleton'/793750, l='MpServer', x=4373.50, y=20.00, z=-1421.50], uq['Bat'/793751, l='MpServer', x=4387.50, y=28.09, z=-1328.66], wl['Creeper'/793741, l='MpServer', x=4398.50, y=18.00, z=-1384.50], xc['Zombie'/793740, l='MpServer', x=4367.50, y=29.00, z=-1414.50], uq['Bat'/793743, l='MpServer', x=4392.31, y=26.00, z=-1358.59], wx['Skeleton'/793742, l='MpServer', x=4397.50, y=20.00, z=-1358.50], xc['Zombie'/793739, l='MpServer', x=4328.50, y=20.00, z=-1412.50], xc['Zombie'/793733, l='MpServer', x=4396.50, y=33.00, z=-1370.50], xc['Zombie'/793732, l='MpServer', x=4391.50, y=35.00, z=-1370.50], wz['Spider'/793734, l='MpServer', x=4388.50, y=34.00, z=-1365.50], wx['Skeleton'/793729, l='MpServer', x=4336.50, y=21.00, z=-1419.50], wl['Creeper'/793728, l='MpServer', x=4380.50, y=33.00, z=-1334.50], wz['Spider'/793731, l='MpServer', x=4390.72, y=35.00, z=-1373.81], xc['Zombie'/793730, l='MpServer', x=4390.50, y=26.00, z=-1373.50]]
Retry entities: 0 total; []
Server brand: craftbukkit
Server type: Non-integrated multiplayer server
Stacktrace:
at biz.a(SourceFile:284)
at azd.b(SourceFile:1951)
at azd.e(SourceFile:718)
at net.minecraft.client.main.Main.main(SourceFile:103)

– System Details –
Details:
Minecraft Version: 1.7.2
Operating System: Mac OS X (x86_64) version 10.8.5
Java Version: 1.6.0_65, Apple Inc.
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
Memory: 73391632 bytes (69 MB) / 125464576 bytes (119 MB) up to 1060372480 bytes (1011 MB)
JVM Flags: 1 total; -Xmx1G
AABB Pool Size: 35133 (1967448 bytes; 1 MB) allocated, 35133 (1967448 bytes; 1 MB) used
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
Launched Version: 1.7.2
LWJGL: 2.9.1
OpenGL: AMD Radeon HD 6750M OpenGL Engine GL version 2.1 ATI-1.8.19, ATI Technologies Inc.
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: 51 (2856 bytes; 0 MB) allocated, 51 (2856 bytes; 0 MB) used
Anisotropic Filtering: Off (1)