Crash with gravel or something like that!

I was strolling in my Minecraft world, when my game crashed. I don't know the cause of the crash, but I DO know that gravel is involved. It crashed 3 times for the same reason. Here is the crash report:

---- Minecraft Crash Report ----
// I bet Cylons wouldn't have this problem.

Time: 24/07/14 7:25 AM
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:254)
	at cjs.b(SourceFile:105)
	at cjs.a(SourceFile:45)
	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:254)
	at cjs.b(SourceFile:105)

-- Block model being tesselated --
Details:
	Block: minecraft:grass[snowy=false]
	Block location: World: (58,62,-91), Chunk: (at 10,3,5 in 3,-6; contains blocks 48,0,-96 to 63,255,-81), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
	Using AO: false
Stacktrace:
	at cjs.a(SourceFile:45)
	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: (58,62,-91), Chunk: (at 10,3,5 in 3,-6; contains blocks 48,0,-96 to 63,255,-81), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
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 7 (x86) version 6.1
	Java Version: 1.7.0_60, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
	Memory: 81689704 bytes (77 MB) / 283303936 bytes (270 MB) up to 518979584 bytes (494 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
	IntCache: cache: 1, tcache: 1, allocated: 12, tallocated: 94