Hopper: java.lang.NullPointerException

java.lang.NullPointerException
	at adj.a(SourceFile:206)
	at adj.c(SourceFile:93)
	at atc.e(SourceFile:523)
	at bic.a(SourceFile:4075)
	at bic.p(SourceFile:3803)
	at bic.b(SourceFile:122)
	at bhk.a(SourceFile:158)
	at bhv.a(SourceFile:1151)
	at bho.a(SourceFile:817)

---- Minecraft Crash Report ----
// You should try our sister game, Minceraft!

Time: 9/6/13 5:26 PM
Description: Unexpected error

java.lang.NullPointerException
	at adj.a(SourceFile:206)
	at adj.c(SourceFile:93)
	at atc.e(SourceFile:523)
	at bic.a(SourceFile:4075)
	at bic.p(SourceFile:3803)
	at bic.b(SourceFile:122)
	at bhk.a(SourceFile:158)
	at bhv.a(SourceFile:1151)
	at bho.a(SourceFile:817)
	at bho.b(SourceFile:695)
	at awb.V(SourceFile:713)
	at awb.e(SourceFile:642)
	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 adj.a(SourceFile:206)
	at adj.c(SourceFile:93)
	at atc.e(SourceFile:523)
	at bic.a(SourceFile:4075)
	at bic.p(SourceFile:3803)
	at bic.b(SourceFile:122)
	at bhk.a(SourceFile:158)
	at bhv.a(SourceFile:1151)
	at bho.a(SourceFile:817)

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bfn['mikeytrant99'/249, l='MpServer', x=1446.88, y=78.17, z=-678.99]]
	Chunk stats: MultiplayerChunkCache: 299, 299
	Level seed: 0
	Level generator: ID 00 - default, ver 1. Features enabled: false
	Level generator options: 
	Level spawn location: World: (-108,64,248), Chunk: (at 4,4,8 in -7,15; contains blocks -112,0,240 to -97,255,255), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 40635 game time, 1812 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: creative (ID 1). Hardcore: false. Cheats: false
	Forced entities: 132 total; [ui['Skeleton'/3526, l='MpServer', x=1371.50, y=30.00, z=-638.50], ui['Skeleton'/3525, l='MpServer', x=1374.44, y=33.00, z=-649.06], sh['Horse'/558, l='MpServer', x=1486.50, y=67.00, z=-709.50], sn['Pig'/559, l='MpServer', x=1473.69, y=64.00, z=-714.19], un['Zombie'/2434, l='MpServer', x=1404.50, y=18.00, z=-735.50], sh['Horse'/556, l='MpServer', x=1486.53, y=67.00, z=-711.03], un['Zombie'/2433, l='MpServer', x=1404.50, y=18.00, z=-737.50], tx['Enderman'/1632, l='MpServer', x=1403.50, y=18.00, z=-736.25], sh['Horse'/557, l='MpServer', x=1484.06, y=68.00, z=-710.94], tx['Enderman'/1633, l='MpServer', x=1405.63, y=19.00, z=-737.00], sn['Pig'/554, l='MpServer', x=1470.41, y=44.00, z=-703.16], sn['Pig'/555, l='MpServer', x=1487.91, y=67.00, z=-705.09], sn['Pig'/552, l='MpServer', x=1472.03, y=64.00, z=-721.78], sn['Pig'/553, l='MpServer', x=1476.03, y=64.00, z=-723.09], tw['Creeper'/2436, l='MpServer', x=1407.50, y=18.00, z=-737.50], tw['Creeper'/3542, l='MpServer', x=1436.50, y=41.00, z=-721.50], sg['Cow'/567, l='MpServer', x=1473.50, y=71.00, z=-635.50], ui['Skeleton'/3810, l='MpServer', x=1434.50, y=34.00, z=-724.50], sg['Cow'/566, l='MpServer', x=1486.06, y=73.00, z=-634.13], ui['Skeleton'/3809, l='MpServer', x=1432.50, y=34.00, z=-727.50], ui['Skeleton'/3271, l='MpServer', x=1464.50, y=20.00, z=-741.50], sn['Pig'/565, l='MpServer', x=1481.50, y=44.00, z=-683.50], sn['Pig'/564, l='MpServer', x=1483.81, y=41.00, z=-686.50], sn['Pig'/563, l='MpServer', x=1482.22, y=41.00, z=-686.50], sn['Pig'/562, l='MpServer', x=1486.31, y=67.00, z=-703.50], sn['Pig'/561, l='MpServer', x=1486.50, y=67.00, z=-702.19], sn['Pig'/575, l='MpServer', x=1489.19, y=68.00, z=-687.84], sh['Horse'/574, l='MpServer', x=1493.66, y=64.00, z=-718.78], sh['Horse'/573, l='MpServer', x=1490.72, y=64.00, z=-717.62], sn['Pig'/572, l='MpServer', x=1489.25, y=67.00, z=-705.53], sg['Cow'/570, l='MpServer', x=1485.38, y=71.00, z=-602.59], sg['Cow'/569, l='MpServer', x=1476.50, y=71.00, z=-633.16], sg['Cow'/568, l='MpServer', x=1474.66, y=71.00, z=-639.78], tw['Creeper'/3794, l='MpServer', x=1444.50, y=11.00, z=-749.50], tw['Creeper'/3802, l='MpServer', x=1406.50, y=29.00, z=-690.50], tw['Creeper'/3561, l='MpServer', x=1479.50, y=54.00, z=-684.50], tw['Creeper'/1604, l='MpServer', x=1415.50, y=34.00, z=-747.50], tw['Creeper'/3560, l='MpServer', x=1461.50, y=51.00, z=-737.50], ui['Skeleton'/3323, l='MpServer', x=1464.50, y=21.00, z=-740.50], un['Zombie'/1877, l='MpServer', x=1384.50, y=33.00, z=-723.50], sn['Pig'/532, l='MpServer', x=1450.53, y=68.00, z=-685.31], tx['Enderman'/1631, l='MpServer', x=1401.53, y=18.00, z=-734.47], sn['Pig'/531, l='MpServer', x=1454.06, y=65.00, z=-694.88], sn['Pig'/530, l='MpServer', x=1448.78, y=66.00, z=-695.84], sg['Cow'/541, l='MpServer', x=1465.47, y=67.00, z=-683.88], sn['Pig'/540, l='MpServer', x=1456.25, y=64.00, z=-712.81], sg['Cow'/543, l='MpServer', x=1468.47, y=66.00, z=-684.41], un['Zombie'/3583, l='MpServer', x=1369.69, y=38.00, z=-690.31], sg['Cow'/542, l='MpServer', x=1464.56, y=67.00, z=-682.59], bfn['mikeytrant99'/249, l='MpServer', x=1446.88, y=78.17, z=-678.99], sg['Cow'/539, l='MpServer', x=1470.22, y=66.00, z=-684.75], sr['Squid'/3762, l='MpServer', x=1398.31, y=61.28, z=-727.38], sr['Squid'/3763, l='MpServer', x=1402.53, y=58.38, z=-723.88], sr['Squid'/3760, l='MpServer', x=1397.72, y=61.00, z=-726.19], un['Zombie'/2266, l='MpServer', x=1401.50, y=19.00, z=-741.50], sr['Squid'/3761, l='MpServer', x=1402.03, y=59.75, z=-730.09], un['Zombie'/2267, l='MpServer', x=1402.50, y=19.00, z=-741.50], sd['Bat'/3467, l='MpServer', x=1453.00, y=48.11, z=-735.00], sd['Bat'/3464, l='MpServer', x=1449.94, y=43.00, z=-737.75], un['Zombie'/1846, l='MpServer', x=1426.53, y=34.00, z=-726.94], sd['Bat'/3468, l='MpServer', x=1453.75, y=49.39, z=-736.41], un['Zombie'/3749, l='MpServer', x=1470.50, y=28.00, z=-627.50], ui['Skeleton'/2242, l='MpServer', x=1416.50, y=49.00, z=-756.50], so['Sheep'/576, l='MpServer', x=1494.50, y=69.00, z=-664.50], so['Sheep'/577, l='MpServer', x=1492.50, y=66.51, z=-667.53], so['Sheep'/578, l='MpServer', x=1495.66, y=68.00, z=-666.47], so['Sheep'/579, l='MpServer', x=1492.78, y=71.00, z=-659.38], sg['Cow'/581, l='MpServer', x=1495.50, y=71.00, z=-605.81], un['Zombie'/2769, l='MpServer', x=1396.50, y=49.00, z=-758.50], sn['Pig'/586, l='MpServer', x=1502.03, y=69.00, z=-664.97], ui['Skeleton'/2770, l='MpServer', x=1385.50, y=40.00, z=-698.50], sn['Pig'/587, l='MpServer', x=1502.53, y=68.00, z=-668.34], ui['Skeleton'/2771, l='MpServer', x=1383.50, y=40.00, z=-697.50], sn['Pig'/588, l='MpServer', x=1504.84, y=67.00, z=-681.84], sn['Pig'/589, l='MpServer', x=1511.50, y=68.00, z=-670.50], sf['Chicken'/590, l='MpServer', x=1519.63, y=69.00, z=-651.47], sf['Chicken'/592, l='MpServer', x=1526.56, y=68.00, z=-650.25], ui['Skeleton'/1322, l='MpServer', x=1368.50, y=18.00, z=-656.50], sd['Bat'/832, l='MpServer', x=1376.75, y=45.10, z=-734.25], sd['Bat'/838, l='MpServer', x=1374.25, y=44.10, z=-727.88], sd['Bat'/2034, l='MpServer', x=1387.25, y=51.00, z=-728.28], sd['Bat'/3947, l='MpServer', x=1392.51, y=35.42, z=-751.31], sd['Bat'/3951, l='MpServer', x=1412.46, y=50.54, z=-752.25], sd['Bat'/3418, l='MpServer', x=1508.51, y=20.38, z=-694.36], ui['Skeleton'/3693, l='MpServer', x=1398.50, y=21.00, z=-757.50], sd['Bat'/440, l='MpServer', x=1402.75, y=21.10, z=-741.75], un['Zombie'/441, l='MpServer', x=1391.94, y=45.00, z=-737.38], sg['Cow'/443, l='MpServer', x=1411.75, y=68.00, z=-680.78], sg['Cow'/444, l='MpServer', x=1399.69, y=70.00, z=-689.50], sf['Chicken'/446, l='MpServer', x=1393.50, y=64.00, z=-683.50], sg['Cow'/447, l='MpServer', x=1398.28, y=68.00, z=-682.50], un['Zombie'/2830, l='MpServer', x=1373.50, y=33.00, z=-645.50], un['Zombie'/2828, l='MpServer', x=1394.50, y=23.00, z=-758.50], ui['Skeleton'/2829, l='MpServer', x=1372.50, y=33.00, z=-643.50], ui['Skeleton'/2560, l='MpServer', x=1417.50, y=17.00, z=-733.50], ui['Skeleton'/2561, l='MpServer', x=1415.50, y=17.00, z=-734.50], uk['Spider'/1276, l='MpServer', x=1368.84, y=38.00, z=-695.84], tw['Creeper'/1277, l='MpServer', x=1367.88, y=38.00, z=-690.31], sf['Chicken'/478, l='MpServer', x=1419.50, y=71.00, z=-647.50], sf['Chicken'/479, l='MpServer', x=1421.50, y=71.00, z=-647.50], ui['Skeleton'/475, l='MpServer', x=1421.94, y=26.00, z=-714.53], ui['Skeleton'/1971, l='MpServer', x=1391.50, y=53.00, z=-738.50], sr['Squid'/471, l='MpServer', x=1412.50, y=58.34, z=-723.50], ui['Skeleton'/3872, l='MpServer', x=1414.50, y=17.00, z=-734.50], tw['Creeper'/3355, l='MpServer', x=1432.50, y=34.00, z=-722.50], sr['Squid'/2929, l='MpServer', x=1446.78, y=61.34, z=-746.09], sr['Squid'/2928, l='MpServer', x=1449.75, y=61.16, z=-742.03], tl['entity.MinecartChest.name'/461, l='MpServer', x=1409.50, y=42.50, z=-724.50], tw['Creeper'/3356, l='MpServer', x=1430.50, y=34.00, z=-725.50], ui['Skeleton'/2939, l='MpServer', x=1368.50, y=31.00, z=-743.50], sg['Cow'/448, l='MpServer', x=1393.44, y=67.00, z=-685.53], un['Zombie'/3131, l='MpServer', x=1426.50, y=15.00, z=-712.50], sd['Bat'/2883, l='MpServer', x=1421.25, y=26.10, z=-680.25], sn['Pig'/500, l='MpServer', x=1426.13, y=64.00, z=-706.31], sf['Chicken'/502, l='MpServer', x=1424.50, y=72.00, z=-607.50], sd['Bat'/2889, l='MpServer', x=1399.29, y=11.75, z=-744.60], sn['Pig'/496, l='MpServer', x=1420.13, y=68.00, z=-698.81], sn['Pig'/497, l='MpServer', x=1426.47, y=65.00, z=-701.75], sn['Pig'/498, l='MpServer', x=1427.50, y=62.00, z=-709.31], sn['Pig'/499, l='MpServer', x=1432.25, y=64.00, z=-705.84], ui['Skeleton'/3871, l='MpServer', x=1416.50, y=17.00, z=-735.50], uk['Spider'/3114, l='MpServer', x=1379.97, y=22.00, z=-736.66], sn['Pig'/493, l='MpServer', x=1440.78, y=64.00, z=-711.72], sn['Pig'/495, l='MpServer', x=1440.19, y=64.00, z=-709.16], sn['Pig'/494, l='MpServer', x=1437.03, y=63.00, z=-716.50], ui['Skeleton'/3377, l='MpServer', x=1373.50, y=31.00, z=-636.50], sf['Chicken'/484, l='MpServer', x=1422.50, y=72.00, z=-604.50], ui['Skeleton'/3584, l='MpServer', x=1368.75, y=38.00, z=-690.78], sf['Chicken'/481, l='MpServer', x=1408.41, y=77.00, z=-636.66], ui['Skeleton'/3585, l='MpServer', x=1369.69, y=38.00, z=-691.56], sf['Chicken'/480, l='MpServer', x=1420.50, y=71.00, z=-646.50], sf['Chicken'/483, l='MpServer', x=1422.50, y=72.00, z=-602.50]]
	Retry entities: 0 total; []
	Server brand: vanilla
	Server type: Integrated singleplayer server
Stacktrace:
	at bfi.a(SourceFile:285)
	at awb.b(SourceFile:1813)
	at awb.e(SourceFile:656)
	at net.minecraft.client.main.Main.main(SourceFile:103)

-- System Details --
Details:
	Minecraft Version: 13w36b
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.7.0_13, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 134647872 bytes (128 MB) / 428998656 bytes (409 MB) up to 954466304 bytes (910 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
	AABB Pool Size: 1784 (99904 bytes; 0 MB) allocated, 1765 (98840 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
	Launched Version: 13w36b
	LWJGL: 2.9.0
	OpenGL: GeForce GTX 560/PCIe/SSE2 GL version 4.3.0, NVIDIA Corporation
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Packs: []
	Current Language: English (US)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 2127 (119112 bytes; 0 MB) allocated, 878 (49168 bytes; 0 MB) used