Brewstand crashed game and currupted map.

player put a water bottle into the brew stand and this happened.

server willl not restart unless I remove the r.-1, 0 region file and let it regenerate.

---- Minecraft Crash Report ----
// You're mean.

Time: 6/28/13 12:02 AM
Description: Ticking tile entity

java.lang.NullPointerException
   at arp.l(SourceFile:106)
   at arp.h(SourceFile:63)
   at abq.h(SourceFile:1268)
   at jo.h(SourceFile:364)
   at net.minecraft.server.MinecraftServer.t(SourceFile:470)
   at io.t(SourceFile:262)
   at net.minecraft.server.MinecraftServer.s(SourceFile:405)
   at net.minecraft.server.MinecraftServer.run(SourceFile:339)
   at he.run(SourceFile:582)


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

-- Head --
Stacktrace:
   at arp.l(SourceFile:106)
   at arp.h(SourceFile:63)

-- Tile entity being ticked --
Details:
   Name: Cauldron // arp
   Block type: ID #117 (tile.brewingStand // amv)
   Block data value: 7 / 0x7 / 0b0111
   Block location: World: (-41,64,349), Chunk: (at 7,4,13 in -3,21; contains blocks -48,0,336 to -33,255,351), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
   Actual block type: ID #117 (tile.brewingStand // amv)
   Actual block data value: 7 / 0x7 / 0b0111
Stacktrace:
   at abq.h(SourceFile:1268)
   at jo.h(SourceFile:364)

-- Affected level --
Details:
   Level name: world
   All players: 0 total; []
   Chunk stats: ServerChunkCache: 632 Drop: 0
   Level seed: -5272272702347778377
   Level generator: ID 02 - largeBiomes, ver 0. Features enabled: true
   Level generator options:
   Level spawn location: World: (-46,64,350), Chunk: (at 2,4,14 in -3,21; contains blocks -48,0,336 to -33,255,351), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
   Level time: 5734823 game time, 7832945 day time
   Level dimension: 0
   Level storage version: 0x04ABD - Anvil
   Level weather: Rain time: 23994 (now: false), thunder time: 113347 (now: false)
   Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
   at net.minecraft.server.MinecraftServer.t(SourceFile:470)
   at io.t(SourceFile:262)
   at net.minecraft.server.MinecraftServer.s(SourceFile:405)
   at net.minecraft.server.MinecraftServer.run(SourceFile:339)
   at he.run(SourceFile:582)

-- System Details --
Details:
   Minecraft Version: 1.6
   Operating System: Linux (amd64) version 2.6.33.4
   Java Version: 1.7.0_13, Oracle Corporation
   Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
   Memory: 4092847032 bytes (3903 MB) / 4268818432 bytes (4071 MB) up to 8563785728 bytes (8167 MB)
   JVM Flags: 3 total; -Xincgc -Xms4096M -Xmx8192M
   AABB Pool Size: 4196 (234976 bytes; 0 MB) allocated, 4196 (234976 bytes; 0 MB) used
   Suspicious classes: No suspicious classes found.
   IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 71
   Profiler Position: N/A (disabled)
   Vec3 Pool Size: 692 (38752 bytes; 0 MB) allocated, 692 (38752 bytes; 0 MB) used
   Player Count: 0 / 25; []
   Is Modded: Unknown (can't tell)
   Type: Dedicated Server (map_server.txt)