java.lang.IllegalArgumentException: Modifier name cannot be empty
	at org.apache.commons.lang3.Validate.notEmpty(Validate.java:398)
	at pi.<init>(SourceFile:31)
	at ug.a(SourceFile:92)
	at yx.D(SourceFile:581)
	at yx.a(SourceFile:471)
	at azw.a(SourceFile:188)
	at azw.a(SourceFile:168)

---- Minecraft Crash Report ----
// I blame Dinnerbone.

Time: 9/6/13 5:35 AM
Description: Rendering screen

java.lang.IllegalArgumentException: Modifier name cannot be empty
	at org.apache.commons.lang3.Validate.notEmpty(Validate.java:398)
	at pi.<init>(SourceFile:31)
	at ug.a(SourceFile:92)
	at yx.D(SourceFile:581)
	at yx.a(SourceFile:471)
	at azw.a(SourceFile:188)
	at azw.a(SourceFile:168)
	at bho.b(SourceFile:720)
	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 org.apache.commons.lang3.Validate.notEmpty(Validate.java:398)
	at pi.<init>(SourceFile:31)
	at ug.a(SourceFile:92)
	at yx.D(SourceFile:581)
	at yx.a(SourceFile:471)
	at azw.a(SourceFile:188)
	at azw.a(SourceFile:168)

-- Screen render details --
Details:
	Screen name: bah
	Mouse location: Scaled: (323, 143). Absolute: (969, 621)
	Screen size: Scaled: (640, 351). Absolute: (1920, 1051). Scale factor of 3

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bfn['Zemat_Racso'/302, l='MpServer', x=923.43, y=8.12, z=-1150.77]]
	Chunk stats: MultiplayerChunkCache: 225, 225
	Level seed: 0
	Level generator: ID 01 - flat, ver 0. Features enabled: false
	Level generator options: 
	Level spawn location: World: (966,13,-1147), Chunk: (at 6,0,5 in 60,-72; contains blocks 960,0,-1152 to 975,255,-1137), Region: (1,-3; contains chunks 32,-96 to 63,-65, blocks 512,0,-1536 to 1023,255,-1025)
	Level time: 127892 game time, 109413 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: 154 total; [tw['Creeper'/4, l='MpServer', x=853.50, y=4.00, z=-1229.50], tw['Creeper'/5, l='MpServer', x=859.50, y=4.00, z=-1230.50], us['Villager'/6, l='MpServer', x=858.63, y=4.00, z=-1199.25], uj['Slime'/7, l='MpServer', x=858.00, y=4.67, z=-1160.37], ui['Skeleton'/8, l='MpServer', x=869.25, y=4.00, z=-1231.16], us['Villager'/10, l='MpServer', x=880.69, y=4.00, z=-1200.38], tj['item.tile.dirt.default'/11, l='MpServer', x=893.75, y=2.13, z=-1156.34], tj['item.tile.dirt.default'/12, l='MpServer', x=894.38, y=1.13, z=-1160.09], tj['item.tile.dirt.default'/13, l='MpServer', x=893.28, y=2.13, z=-1160.41], tj['item.tile.dirt.default'/14, l='MpServer', x=891.75, y=3.13, z=-1162.34], tj['item.tile.dirt.default'/15, l='MpServer', x=891.94, y=3.13, z=-1159.63], tj['item.tile.dirt.default'/17, l='MpServer', x=891.44, y=3.13, z=-1166.69], tj['item.tile.dirt.default'/16, l='MpServer', x=893.31, y=2.13, z=-1159.03], tj['item.tile.dirt.default'/19, l='MpServer', x=892.53, y=2.13, z=-1164.78], tj['item.tile.dirt.default'/18, l='MpServer', x=891.84, y=3.13, z=-1156.28], tj['item.tile.dirt.default'/21, l='MpServer', x=889.13, y=3.13, z=-1164.75], tj['item.tile.dirt.default'/20, l='MpServer', x=889.59, y=3.13, z=-1165.59], tj['item.tile.dirt.default'/23, l='MpServer', x=894.13, y=1.13, z=-1157.13], tj['item.tile.dirt.default'/22, l='MpServer', x=889.78, y=4.13, z=-1160.06], tj['item.tile.dirt.default'/25, l='MpServer', x=895.03, y=1.13, z=-1158.34], tj['item.tile.dirt.default'/24, l='MpServer', x=892.13, y=2.13, z=-1156.41], tj['item.tile.dirt.default'/27, l='MpServer', x=890.88, y=2.13, z=-1161.88], tj['item.tile.dirt.default'/26, l='MpServer', x=894.44, y=2.13, z=-1166.31], tj['item.tile.dirt.default'/29, l='MpServer', x=895.69, y=2.13, z=-1166.38], tj['item.tile.dirt.default'/28, l='MpServer', x=894.16, y=3.13, z=-1156.41], tj['item.tile.dirt.default'/31, l='MpServer', x=895.97, y=1.13, z=-1159.66], tj['item.tile.dirt.default'/30, l='MpServer', x=895.94, y=2.13, z=-1163.81], tj['item.tile.dirt.default'/34, l='MpServer', x=896.34, y=2.13, z=-1168.16], tj['item.tile.dirt.default'/35, l='MpServer', x=899.13, y=3.13, z=-1170.78], uj['Slime'/32, l='MpServer', x=886.13, y=4.00, z=-1143.39], tj['item.tile.dirt.default'/38, l='MpServer', x=897.72, y=1.13, z=-1166.69], tj['item.tile.dirt.default'/39, l='MpServer', x=900.88, y=2.13, z=-1158.47], tj['item.tile.dirt.default'/36, l='MpServer', x=897.88, y=1.13, z=-1160.75], tj['item.tile.dirt.default'/37, l='MpServer', x=897.91, y=1.13, z=-1157.22], tj['item.tile.dirt.default'/42, l='MpServer', x=901.94, y=3.13, z=-1154.94], tj['item.tile.dirt.default'/43, l='MpServer', x=900.38, y=1.13, z=-1159.13], tj['item.tile.dirt.default'/40, l='MpServer', x=900.38, y=1.13, z=-1162.66], tj['item.tile.dirt.default'/41, l='MpServer', x=900.22, y=2.13, z=-1167.13], tj['item.tile.dirt.default'/46, l='MpServer', x=896.88, y=1.13, z=-1165.94], tj['item.tile.dirt.default'/47, l='MpServer', x=899.09, y=1.13, z=-1157.41], tj['item.tile.dirt.default'/44, l='MpServer', x=897.91, y=2.13, z=-1160.94], tj['item.tile.dirt.default'/45, l='MpServer', x=899.66, y=1.13, z=-1163.63], tj['item.tile.dirt.default'/51, l='MpServer', x=901.00, y=2.13, z=-1163.06], tj['item.tile.dirt.default'/50, l='MpServer', x=897.00, y=1.13, z=-1163.63], tj['item.tile.dirt.default'/49, l='MpServer', x=905.56, y=3.13, z=-1164.88], tj['item.tile.dirt.default'/48, l='MpServer', x=899.88, y=2.13, z=-1165.97], tj['item.tile.dirt.default'/55, l='MpServer', x=897.69, y=1.13, z=-1165.28], tj['item.tile.dirt.default'/54, l='MpServer', x=898.06, y=2.13, z=-1158.06], tj['item.tile.dirt.default'/53, l='MpServer', x=901.94, y=1.13, z=-1164.88], tj['item.tile.dirt.default'/52, l='MpServer', x=902.53, y=1.13, z=-1159.44], tj['item.tile.dirt.default'/59, l='MpServer', x=903.50, y=2.13, z=-1159.84], tj['item.tile.dirt.default'/58, l='MpServer', x=901.72, y=1.13, z=-1162.06], tj['item.tile.dirt.default'/57, l='MpServer', x=903.00, y=2.13, z=-1161.31], tj['item.tile.dirt.default'/56, l='MpServer', x=897.78, y=1.13, z=-1163.41], tj['item.item.slimeball'/63, l='MpServer', x=910.88, y=4.13, z=-1158.19], tj['item.tile.dirt.default'/62, l='MpServer', x=896.63, y=1.13, z=-1161.50], tj['item.tile.dirt.default'/61, l='MpServer', x=896.75, y=2.13, z=-1157.28], tj['item.tile.dirt.default'/60, l='MpServer', x=896.75, y=1.13, z=-1158.13], tj['item.tile.dirt.default'/68, l='MpServer', x=906.06, y=3.13, z=-1145.13], tj['item.tile.dirt.default'/69, l='MpServer', x=906.88, y=3.13, z=-1145.16], tj['item.item.slimeball'/70, l='MpServer', x=908.41, y=3.13, z=-1138.56], tj['item.tile.dirt.default'/71, l='MpServer', x=908.13, y=3.13, z=-1140.69], tj['item.tile.dirt.default'/64, l='MpServer', x=906.69, y=3.13, z=-1147.13], tj['item.item.slimeball'/65, l='MpServer', x=905.13, y=3.13, z=-1146.34], tj['item.tile.dirt.default'/66, l='MpServer', x=905.69, y=3.13, z=-1146.88], tj['item.tile.dirt.default'/67, l='MpServer', x=907.78, y=3.13, z=-1146.66], tj['item.tile.dirt.default'/76, l='MpServer', x=910.84, y=3.13, z=-1137.66], tj['item.tile.dirt.default'/77, l='MpServer', x=909.13, y=3.13, z=-1137.28], uj['Slime'/78, l='MpServer', x=911.15, y=4.33, z=-1133.42], tj['item.tile.dirt.default'/79, l='MpServer', x=910.78, y=4.13, z=-1135.97], tj['item.tile.dirt.default'/72, l='MpServer', x=908.13, y=3.13, z=-1138.13], tj['item.tile.dirt.default'/73, l='MpServer', x=906.06, y=3.13, z=-1137.13], tj['item.tile.dirt.default'/74, l='MpServer', x=906.13, y=3.13, z=-1138.28], tj['item.tile.dirt.default'/75, l='MpServer', x=906.88, y=3.13, z=-1136.19], bfn['Zemat_Racso'/302, l='MpServer', x=923.43, y=8.12, z=-1150.77], uj['Slime'/81, l='MpServer', x=901.91, y=4.00, z=-1134.75], uj['Slime'/80, l='MpServer', x=908.65, y=4.00, z=-1135.30], uj['Slime'/93, l='MpServer', x=929.64, y=4.47, z=-1146.79], uj['Slime'/92, l='MpServer', x=922.19, y=4.31, z=-1155.04], uj['Slime'/95, l='MpServer', x=922.78, y=4.00, z=-1142.81], uj['Slime'/94, l='MpServer', x=923.53, y=4.00, z=-1136.37], uj['Slime'/89, l='MpServer', x=915.39, y=4.14, z=-1218.58], tj['item.tile.dirt.default'/91, l='MpServer', x=914.88, y=3.13, z=-1140.47], uk['Spider'/90, l='MpServer', x=924.13, y=4.00, z=-1202.72], un['Zombie'/102, l='MpServer', x=918.50, y=4.00, z=-1081.50], ui['Skeleton'/103, l='MpServer', x=926.50, y=4.00, z=-1072.50], uj['Slime'/100, l='MpServer', x=918.50, y=4.00, z=-1123.06], tw['Creeper'/101, l='MpServer', x=920.50, y=4.00, z=-1087.50], uj['Slime'/98, l='MpServer', x=928.25, y=4.00, z=-1132.38], uj['Slime'/99, l='MpServer', x=927.01, y=3.39, z=-1132.84], uj['Slime'/96, l='MpServer', x=924.84, y=4.00, z=-1131.93], uj['Slime'/97, l='MpServer', x=917.50, y=4.00, z=-1127.38], tj['item.tile.dirt.default'/119, l='MpServer', x=938.47, y=3.13, z=-1140.13], tj['item.tile.dirt.default'/118, l='MpServer', x=940.88, y=3.13, z=-1138.50], tj['item.tile.dirt.default'/117, l='MpServer', x=939.34, y=3.13, z=-1140.34], uk['Spider'/116, l='MpServer', x=938.66, y=4.00, z=-1196.13], uk['Spider'/127, l='MpServer', x=936.72, y=4.00, z=-1075.56], un['Zombie'/126, l='MpServer', x=936.34, y=4.00, z=-1101.97], un['Zombie'/125, l='MpServer', x=935.44, y=4.00, z=-1102.53], ui['Skeleton'/124, l='MpServer', x=940.78, y=4.00, z=-1114.28], tj['item.item.slimeball'/123, l='MpServer', x=943.44, y=4.13, z=-1136.69], tj['item.tile.dirt.default'/122, l='MpServer', x=943.88, y=3.13, z=-1138.66], tj['item.tile.dirt.default'/121, l='MpServer', x=942.63, y=3.13, z=-1138.88], tj['item.tile.dirt.default'/120, l='MpServer', x=940.38, y=3.13, z=-1139.63], uj['Slime'/137, l='MpServer', x=946.69, y=4.00, z=-1086.75], tj['item.tile.dirt.default'/136, l='MpServer', x=944.13, y=4.13, z=-1137.56], tw['Creeper'/143, l='MpServer', x=964.50, y=4.00, z=-1228.50], ui['Skeleton'/128, l='MpServer', x=931.50, y=4.00, z=-1074.50], sh['Horse'/154, l='MpServer', x=991.97, y=4.00, z=-1218.78], sg['Cow'/155, l='MpServer', x=986.06, y=4.00, z=-1226.06], sh['Horse'/156, l='MpServer', x=989.19, y=7.00, z=-1204.94], sd['Bat'/157, l='MpServer', x=991.75, y=6.10, z=-1211.75], sd['Bat'/158, l='MpServer', x=991.75, y=6.10, z=-1210.66], sd['Bat'/159, l='MpServer', x=989.38, y=6.10, z=-1209.25], uk['Spider'/144, l='MpServer', x=970.50, y=4.00, z=-1222.50], tw['Creeper'/145, l='MpServer', x=970.50, y=9.00, z=-1204.81], tw['Creeper'/146, l='MpServer', x=972.50, y=5.00, z=-1183.50], un['Zombie'/147, l='MpServer', x=971.50, y=6.00, z=-1177.50], tw['Creeper'/148, l='MpServer', x=972.50, y=5.00, z=-1174.50], ui['Skeleton'/149, l='MpServer', x=972.50, y=5.00, z=-1176.50], uj['Slime'/150, l='MpServer', x=970.22, y=7.00, z=-1111.69], uj['Slime'/171, l='MpServer', x=987.31, y=5.00, z=-1113.32], ui['Skeleton'/170, l='MpServer', x=988.22, y=5.00, z=-1132.50], uj['Slime'/169, l='MpServer', x=991.22, y=4.30, z=-1129.94], uj['Slime'/168, l='MpServer', x=986.25, y=6.81, z=-1163.88], ui['Skeleton'/174, l='MpServer', x=990.50, y=4.00, z=-1072.50], uj['Slime'/173, l='MpServer', x=980.77, y=7.62, z=-1094.83], uk['Spider'/172, l='MpServer', x=993.02, y=4.00, z=-1104.92], ui['Skeleton'/163, l='MpServer', x=991.46, y=4.00, z=-1211.18], sd['Bat'/162, l='MpServer', x=989.25, y=6.10, z=-1209.66], un['Zombie'/161, l='MpServer', x=990.13, y=4.00, z=-1211.69], sd['Bat'/160, l='MpServer', x=989.25, y=6.10, z=-1209.25], un['Zombie'/167, l='MpServer', x=991.69, y=4.00, z=-1210.00], tx['Enderman'/166, l='MpServer', x=990.48, y=3.63, z=-1210.30], ui['Skeleton'/165, l='MpServer', x=989.30, y=4.00, z=-1211.06], ui['Skeleton'/164, l='MpServer', x=989.90, y=4.00, z=-1209.34], sh['Horse'/186, l='MpServer', x=994.97, y=4.00, z=-1228.81], tw['Creeper'/187, l='MpServer', x=993.50, y=4.00, z=-1229.49], sh['Horse'/184, l='MpServer', x=1006.00, y=4.00, z=-1231.59], sh['Horse'/185, l='MpServer', x=1006.78, y=4.00, z=-1226.56], sh['Horse'/190, l='MpServer', x=996.75, y=4.00, z=-1198.97], tw['Creeper'/191, l='MpServer', x=1005.69, y=4.00, z=-1182.63], tw['Creeper'/188, l='MpServer', x=994.50, y=4.00, z=-1225.50], sh['Horse'/189, l='MpServer', x=999.06, y=4.00, z=-1211.72], sh['Horse'/182, l='MpServer', x=1001.84, y=4.00, z=-1221.50], sh['Horse'/183, l='MpServer', x=1004.41, y=4.00, z=-1231.34], ui['Skeleton'/197, l='MpServer', x=1004.50, y=4.00, z=-1144.50], ui['Skeleton'/196, l='MpServer', x=1005.50, y=4.00, z=-1147.50], uj['Slime'/199, l='MpServer', x=994.13, y=5.06, z=-1088.14], uj['Slime'/198, l='MpServer', x=1000.58, y=3.00, z=-1142.21], un['Zombie'/193, l='MpServer', x=1004.50, y=4.00, z=-1152.50], tw['Creeper'/192, l='MpServer', x=1006.34, y=4.00, z=-1181.38], tw['Creeper'/195, l='MpServer', x=1005.50, y=4.00, z=-1149.50], un['Zombie'/194, l='MpServer', x=992.50, y=4.00, z=-1145.50]]
	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:651)
	at net.minecraft.client.main.Main.main(SourceFile:103)

-- System Details --
Details:
	Minecraft Version: 13w36b
	Operating System: Windows 8 (x86) version 6.2
	Java Version: 1.7.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
	Memory: 113440968 bytes (108 MB) / 292810752 bytes (279 MB) up to 1037959168 bytes (989 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
	AABB Pool Size: 9251 (518056 bytes; 0 MB) allocated, 5 (280 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Launched Version: 13w36b
	LWJGL: 2.9.0
	OpenGL: Intel(R) HD Graphics 4000 GL version 4.0.0 - Build 9.17.10.2875, Intel
	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: 850 (47600 bytes; 0 MB) allocated, 33 (1848 bytes; 0 MB) used