— Minecraft Crash Report ----
// Ouch. That hurt

Time: 11/13/13 3:03 PM
Description: Ticking entity

java.lang.NullPointerException: Ticking entity
at abp.a(SourceFile:331)
at xj.k(SourceFile:203)
at xl.e(SourceFile:430)
at blc.e(SourceFile:205)
at rh.h(SourceFile:1205)
at xl.h(SourceFile:240)
at bje.h(SourceFile:63)
at afn.a(SourceFile:1368)
at afn.g(SourceFile:1346)
at afn.h(SourceFile:1253)
at azd.o(SourceFile:1532)
at azd.ad(SourceFile:753)
at azd.e(SourceFile:704)
at net.minecraft.client.main.Main.main(SourceFile:103)

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

– Head –
Stacktrace:
at abp.a(SourceFile:331)
at xj.k(SourceFile:203)
at xl.e(SourceFile:430)
at blc.e(SourceFile:205)
at rh.h(SourceFile:1205)
at xl.h(SourceFile:240)
at bje.h(SourceFile:63)
at afn.a(SourceFile:1368)
at afn.g(SourceFile:1346)

– Entity being ticked –
Details:
Entity Type: null (bje)
Entity ID: 1468708
Entity Name: djacob89
Entity's Exact location: 634.00, 14.72, 1087.00
Entity's Block location: World: (634,14,1087), Chunk: (at 10,0,15 in 39,67; contains blocks 624,0,1072 to 639,255,1087), Region: (1,2; contains chunks 32,64 to 63,95, blocks 512,0,1024 to 1023,255,1535)
Entity's Momentum: 0.00, 0.00, 0.00
Stacktrace:
at afn.h(SourceFile:1253)

– Affected level –
Details:
Level name: MpServer
All players: 6 total; [bje['djacob89'/1468708, l='MpServer', x=634.00, y=14.72, z=1087.00], bld['§cMantrackerBryc'/207687, l='MpServer', x=634.00, y=13.00, z=1087.00], bld['§cAvail376'/224449, l='MpServer', x=646.50, y=14.00, z=1101.22], bld['§cTimmeh515'/179211, l='MpServer', x=634.97, y=14.00, z=1097.84], bld['§cbstsbrick'/133029, l='MpServer', x=631.64, y=14.00, z=1098.13], bld['§cNinjaMustache'/170440, l='MpServer', x=638.78, y=14.00, z=1097.94]]
Chunk stats: MultiplayerChunkCache: 45, 45
Level seed: 0
Level generator: ID 01 - flat, ver 0. Features enabled: false
Level generator options:
Level spawn location: World: (634,13,1087), Chunk: (at 10,0,15 in 39,67; contains blocks 624,0,1072 to 639,255,1087), Region: (1,2; contains chunks 32,64 to 63,95, blocks 512,0,1024 to 1023,255,1535)
Level time: 106486793 game time, 106668156 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: 12 total; [bje['djacob89'/1468708, l='MpServer', x=634.00, y=14.72, z=1087.00], bld['§cAvail376'/224449, l='MpServer', x=646.50, y=14.00, z=1101.22], bld['§cAvail376'/224449, l='MpServer', x=646.50, y=14.00, z=1101.22], bld['§cMantrackerBryc'/207687, l='MpServer', x=634.00, y=13.00, z=1087.00], bld['§cbstsbrick'/133029, l='MpServer', x=631.64, y=14.00, z=1098.13], bld['§cNinjaMustache'/170440, l='MpServer', x=638.78, y=14.00, z=1097.94], bld['§cTimmeh515'/179211, l='MpServer', x=634.97, y=14.00, z=1097.84], bld['§cInfernoGuy4'/103558, l='MpServer', x=626.72, y=14.00, z=1099.50], bld['§cNinjaMustache'/170440, l='MpServer', x=638.78, y=14.00, z=1097.94], bld['§cbstsbrick'/133029, l='MpServer', x=631.64, y=14.00, z=1098.13], bld['§cMantrackerBryc'/207687, l='MpServer', x=634.00, y=13.00, z=1087.00], bld['§cTimmeh515'/179211, l='MpServer', x=634.97, y=14.00, z=1097.84]]
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:713)
at net.minecraft.client.main.Main.main(SourceFile:103)

basically i get on the shotbow network server and go to choose a gameplay "wasted" it connects to lobby and then crashes and gives me the above report