FallingBlock Client Crash

My Plugin is crashing my client and I would like to find out if it's my fult or if I have to file a bug report at mojang/bukkit.

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Code:

 Minecraft has crashed!     
 
    ----------------------     
 
Minecraft has stopped running because it encountered a problem; Rendering entity in world
 
A full error report has been saved to /home/max/.minecraft/crash-reports/crash-2013-05-05_01.02.57-client.txt - Please include a copy of that file (Not this screen!) if you report this crash to anyone; without it, they will not be able to help fix the crash :(
 
--- BEGIN ERROR REPORT 47f9092 --------
 
Full report at:
 
/home/max/.minecraft/crash-reports/crash-2013-05-05_01.02.57-client.txt
 
Please show that file to Mojang, NOT just this screen!
 
Generated 5/5/13 1:02 AM
 
-- Head --
 
Stacktrace:
 
at bhb.a(SourceFile:40)
 
at bhb.a(SourceFile:12)
 
-- Entity being rendered --
 
Details:
 
Entity Type: FallingSand (rg)
 
Entity ID: 7536
 
Entity Name: Falling Block
 
Entity's Exact location: 446.50, 68.50, 109.50
 
Entity's Block location: World: (446,68,109), Chunk: (at 14,4,13 in 27,6; contains blocks 432,0,96 to 447,255,111), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
 
Entity's Momentum: 0.00, 0.00, 0.00
 
Immitating block ID: 0
 
Immitating block data: 3
 
-- Renderer details --
 
Details:
 
Assigned renderer: bhb@6693f61c
 
Location: -3.55,-0.12,1.60 - World: (-4,-1,1), Chunk: (at 12,-1,1 in -1,0; contains blocks -16,0,0 to -1,255,15), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
 
Rotation: 0.0
 
Delta: 0.103375435
 
Stacktrace:
 
at bgy.a(SourceFile:201)
 
at bgy.a(SourceFile:181)
 
at bfy.a(SourceFile:307)
 
at bfq.a(SourceFile:894)
 
-- Affected level --
 
Details:
 
Level name: MpServer
 
All players: 1 total; [bdv['Diemex94'/3099, l='MpServer', x=450.05, y=68.62, z=107.90]]
 
Chunk stats: MultiplayerChunkCache: 225
 
Level seed: 0
 
Level generator: ID 00 - default, ver 1. Features enabled: false
 
Level generator options:
 
Level spawn location: World: (252,64,256), Chunk: (at 12,4,0 in 15,16; contains blocks 240,0,256 to 255,255,271), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
 
Level time: 205303053 game time, 160619358092 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: 62 total; [np['Painting'/3109, l='MpServer', x=426.06, y=86.00, z=-320.00], bdv['Diemex94'/3099, l='MpServer', x=450.05, y=68.62, z=107.90], np['Painting'/3124, l='MpServer', x=406.94, y=72.00, z=-347.00], np['Painting'/3123, l='MpServer', x=404.00, y=71.50, z=-342.06], rh['item.tile.sapling.jungle'/6549, l='MpServer', x=449.13, y=83.13, z=106.13], rh['item.tile.log.jungle'/7348, l='MpServer', x=454.00, y=66.13, z=109.59], qr['Squid'/5652, l='MpServer', x=440.47, y=59.00, z=77.63], qr['Squid'/5653, l='MpServer', x=457.31, y=57.47, z=94.53], qr['Squid'/5654, l='MpServer', x=463.13, y=61.51, z=97.32], qr['Squid'/5655, l='MpServer', x=456.55, y=62.53, z=97.79], qo['Sheep'/5678, l='MpServer', x=476.16, y=76.00, z=140.34], qo['Sheep'/5677, l='MpServer', x=472.03, y=63.00, z=136.13], rh['item.tile.sapling.jungle'/7323, l='MpServer', x=451.78, y=92.13, z=102.19], rg['Falling Block'/7533, l='MpServer', x=447.50, y=67.50, z=110.50], rg['Falling Block'/7532, l='MpServer', x=447.50, y=72.50, z=110.50], rg['Falling Block'/7535, l='MpServer', x=452.50, y=67.50, z=110.50], rg['Falling Block'/7534, l='MpServer', x=446.50, y=73.50, z=110.50], rg['Falling Block'/7529, l='MpServer', x=447.50, y=68.50, z=110.50], rg['Falling Block'/7528, l='MpServer', x=446.50, y=68.50, z=110.50], rg['Falling Block'/7531, l='MpServer', x=447.50, y=68.50, z=109.50], qo['Sheep'/6101, l='MpServer', x=411.53, y=72.00, z=122.47], rg['Falling Block'/7530, l='MpServer', x=447.50, y=72.50, z=109.50], rg['Falling Block'/7525, l='MpServer', x=446.50, y=67.50, z=110.50], qo['Sheep'/5629, l='MpServer', x=444.50, y=69.00, z=117.53], rg['Falling Block'/7524, l='MpServer', x=447.50, y=71.50, z=110.50], qo['Sheep'/5628, l='MpServer', x=442.47, y=69.00, z=117.47], rg['Falling Block'/7527, l='MpServer', x=446.50, y=72.50, z=110.50], rg['Falling Block'/7526, l='MpServer', x=447.50, y=67.50, z=109.50], rg['Falling Block'/7521, l='MpServer', x=452.50, y=70.50, z=110.50], rg['Falling Block'/7520, l='MpServer', x=447.50, y=70.50, z=110.50], rg['Falling Block'/7523, l='MpServer', x=447.50, y=71.50, z=109.50], qo['Sheep'/5627, l='MpServer', x=441.47, y=69.00, z=118.53], rg['Falling Block'/7522, l='MpServer', x=446.50, y=71.50, z=110.50], rg['Falling Block'/7536, l='MpServer', x=446.50, y=68.50, z=109.50], rg['Falling Block'/7537, l='MpServer', x=446.50, y=68.50, z=110.50], rg['Falling Block'/7538, l='MpServer', x=447.50, y=68.50, z=109.50], rh['item.tile.log.jungle'/7503, l='MpServer', x=448.82, y=66.75, z=109.72], sh['Spider'/7502, l='MpServer', x=419.50, y=14.00, z=139.50], sj['Zombie'/7500, l='MpServer', x=419.50, y=14.00, z=139.50], rh['item.tile.sapling.jungle'/7499, l='MpServer', x=442.90, y=81.76, z=108.88], rh['item.tile.sapling.jungle'/7254, l='MpServer', x=458.75, y=66.13, z=106.69], rg['Falling Block'/7518, l='MpServer', x=446.50, y=70.50, z=110.50], rg['Falling Block'/7519, l='MpServer', x=447.50, y=70.50, z=109.50], rg['Falling Block'/7516, l='MpServer', x=446.50, y=71.50, z=109.50], rg['Falling Block'/7517, l='MpServer', x=446.50, y=70.50, z=109.50], np['Painting'/3123, l='MpServer', x=404.00, y=71.50, z=-342.06], rg['Falling Block'/7514, l='MpServer', x=447.50, y=69.50, z=110.50], np['Painting'/3124, l='MpServer', x=406.94, y=72.00, z=-347.00], rg['Falling Block'/7515, l='MpServer', x=452.50, y=69.50, z=110.50], rg['Falling Block'/7512, l='MpServer', x=446.50, y=70.50, z=109.50], rg['Falling Block'/7513, l='MpServer', x=447.50, y=69.50, z=109.50], rg['Falling Block'/7510, l='MpServer', x=446.50, y=69.50, z=110.50], rg['Falling Block'/7511, l='MpServer', x=446.50, y=72.50, z=109.50], rg['Falling Block'/7508, l='MpServer', x=452.50, y=68.50, z=110.50], rg['Falling Block'/7509, l='MpServer', x=446.50, y=69.50, z=109.50], rg['Falling Block'/7506, l='MpServer', x=446.50, y=73.50, z=109.50], rh['item.tile.sapling.jungle'/6699, l='MpServer', x=453.63, y=67.13, z=107.59], rg['Falling Block'/7507, l='MpServer', x=446.50, y=68.50, z=109.50], rg['Falling Block'/7504, l='MpServer', x=447.50, y=73.49, z=110.50], rg['Falling Block'/7505, l='MpServer', x=446.50, y=67.50, z=109.50], ru['Creeper'/6229, l='MpServer', x=405.50, y=32.00, z=108.50], rh['item.tile.log.jungle'/7428, l='MpServer', x=448.88, y=66.54, z=109.38]]
 
Retry entities: 0 total; []
 
Stacktrace:
 
at bds.a(SourceFile:282)
 
at net.minecraft.client.Minecraft.b(SourceFile:1881)
 
at net.minecraft.client.Minecraft.run(SourceFile:535)
 
at java.lang.Thread.run(Thread.java:679)
 
-- System Details --
 
Details:
 
Minecraft Version: 1.5.2
 
Operating System: Linux (amd64) version 3.0.0-32-generic
 
Java Version: 1.6.0_27, Sun Microsystems Inc.
 
Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
 
Memory: 60985240 bytes (58 MB) / 144637952 bytes (137 MB) up to 924647424 bytes (881 MB)
 
JVM Flags: 0 total;
 
AABB Pool Size: 1468 (82208 bytes; 0 MB) allocated, 917 (51352 bytes; 0 MB) used
 
Suspicious classes: No suspicious classes found.
 
IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
 
LWJGL: 2.4.2
 
OpenGL: ATI Radeon HD 4800 Series            GL version 3.3.11005 Compatibility Profile Context, ATI Technologies Inc.
 
Is Modded: Probably not. Jar signature remains and client brand is untouched.
 
Type: Client (map_client.txt)
 
Texture Pack: Default
 
Profiler Position: N/A (disabled)
 
Vec3 Pool Size: 1639 (91784 bytes; 0 MB) allocated, 363 (20328 bytes; 0 MB) used
 
java.lang.NullPointerException
 
at bhb.a(SourceFile:40)
 
at bhb.a(SourceFile:12)
 
at bgy.a(SourceFile:201)
 
at bgy.a(SourceFile:181)
 
at bfy.a(SourceFile:307)
 
at bfq.a(SourceFile:894)
 
at bfq.b(SourceFile:745)
 
at net.minecraft.client.Minecraft.K(SourceFile:597)
 
at net.minecraft.client.Minecraft.run(SourceFile:526)
 
at java.lang.Thread.run(Thread.java:679)
 
--- END ERROR REPORT ce2ceb5d ----------

The files that spawn the FallingBlocks are here:

https://github.com/Di3mex/ExtraHard...shire/ExtraHardMode/task/FallingLogsTask.java
and here
https://github.com/Di3mex/ExtraHard...ExtraHardMode/features/RealisticChopping.java

 

Issue was: Spawning a FallingBlock with type Material.AIR will crash the client.