Random Crash

---- Minecraft Crash Report ----
// Ouch. That hurt :(

Time: 7/23/14 5:11 PM
Description: Tesselating block model

java.lang.IndexOutOfBoundsException: Index: 1, Size: 0
	at java.util.ArrayList.rangeCheck(Unknown Source)
	at java.util.ArrayList.get(Unknown Source)
	at csu.b(SourceFile:88)
	at chc.a(SourceFile:156)
	at cjs.a(SourceFile:139)
	at cjs.a(SourceFile:74)
	at cjs.a(SourceFile:43)
	at cjs.a(SourceFile:35)
	at cjq.a(SourceFile:62)
	at cmt.b(SourceFile:156)
	at cmm.a(SourceFile:71)
	at cmm.run(SourceFile:31)
	at java.lang.Thread.run(Unknown Source)


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

-- Head --
Stacktrace:
	at java.util.ArrayList.rangeCheck(Unknown Source)
	at java.util.ArrayList.get(Unknown Source)
	at csu.b(SourceFile:88)
	at chc.a(SourceFile:156)
	at cjs.a(SourceFile:139)
	at cjs.a(SourceFile:74)

-- Block model being tesselated --
Details:
	Block: minecraft:grass[snowy=false]
	Block location: World: (1197,69,25), Chunk: (at 13,4,9 in 74,1; contains blocks 1184,0,16 to 1199,255,31), Region: (2,0; contains chunks 64,0 to 95,31, blocks 1024,0,0 to 1535,255,511)
	Using AO: true
Stacktrace:
	at cjs.a(SourceFile:43)
	at cjs.a(SourceFile:35)

-- Block being tesselated --
Details:
	Block type: ID #2 (tile.grass // avk)
	Block data value: 0 / 0x0 / 0b0000
	Block location: World: (1197,69,25), Chunk: (at 13,4,9 in 74,1; contains blocks 1184,0,16 to 1199,255,31), Region: (2,0; contains chunks 64,0 to 95,31, blocks 1024,0,0 to 1535,255,511)
Stacktrace:
	at cjq.a(SourceFile:62)
	at cmt.b(SourceFile:156)
	at cmm.a(SourceFile:71)
	at cmm.run(SourceFile:31)
	at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
	Minecraft Version: 14w30b
	Operating System: Windows 8 (amd64) version 6.2
	Java Version: 1.8.0_05, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 1412084344 bytes (1346 MB) / 3143106560 bytes (2997 MB) up to 3143106560 bytes (2997 MB)
	JVM Flags: 5 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -XX:PermSize=256M -XX:MaxPermSize=512M -Xmx3072M -Xms3072M
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95