Hopper: Unhandled exception

Unhandled exception
	at java.util.zip.ZipFile$1.nextElement(Unknown Source)
	at java.util.zip.ZipFile$1.nextElement(Unknown Source)
	at blq.c(SourceFile:69)
	at bmf.a(SourceFile:30)
	at bmf.a(SourceFile:84)
	at avx.b(SourceFile:418)
	at bcl.a(SourceFile:146)
	at ayr.a(SourceFile:70)
	at bcl.a(SourceFile:153)
	at ayr.d(SourceFile:133)
	at ayr.m(SourceFile:109)

---- Minecraft Crash Report ----
// Don't be sad. I'll do better next time, I promise!

Time: 06/09/13 18:07
Description: Updating screen events

java.util.zip.ZipError: jzentry == 0,
 jzfile = 192535448,
 total = 876,
 name = C:\Users\Scott\AppData\Roaming\.minecraft\Snapshot\resourcepacks\Realistic.zip,
 i = 1,
 message = null
	at java.util.zip.ZipFile$1.nextElement(Unknown Source)
	at java.util.zip.ZipFile$1.nextElement(Unknown Source)
	at blq.c(SourceFile:69)
	at bmf.a(SourceFile:30)
	at bmf.a(SourceFile:84)
	at avx.b(SourceFile:418)
	at bcl.a(SourceFile:146)
	at ayr.a(SourceFile:70)
	at bcl.a(SourceFile:153)
	at ayr.d(SourceFile:133)
	at ayr.m(SourceFile:109)
	at avx.m(SourceFile:1202)
	at avx.V(SourceFile:686)
	at avx.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 java.util.zip.ZipFile$1.nextElement(Unknown Source)
	at java.util.zip.ZipFile$1.nextElement(Unknown Source)
	at blq.c(SourceFile:69)
	at bmf.a(SourceFile:30)
	at bmf.a(SourceFile:84)
	at avx.b(SourceFile:418)
	at bcl.a(SourceFile:146)
	at ayr.a(SourceFile:70)
	at bcl.a(SourceFile:153)
	at ayr.d(SourceFile:133)
	at ayr.m(SourceFile:109)

-- Affected screen --
Details:
	Screen name: bcl

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bfg['scottsters'/211, l='MpServer', x=-76.53, y=71.62, z=-132.14]]
	Chunk stats: MultiplayerChunkCache: 308, 308
	Level seed: 0
	Level generator: ID 00 - default, ver 1. Features enabled: false
	Level generator options: 
	Level spawn location: World: (-16,64,256), Chunk: (at 0,4,0 in -1,16; contains blocks -16,0,256 to -1,255,271), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 12598 game time, 12598 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: 67 total; [sd['Bat'/6198, l='MpServer', x=-65.56, y=42.20, z=-137.25], sd['Bat'/5221, l='MpServer', x=-48.25, y=55.33, z=-127.75], sd['Bat'/1663, l='MpServer', x=-48.46, y=56.00, z=-129.48], sd['Bat'/1662, l='MpServer', x=-50.19, y=56.83, z=-125.59], sd['Bat'/6088, l='MpServer', x=-107.16, y=54.00, z=-101.66], sg['Cow'/516, l='MpServer', x=-22.91, y=70.00, z=-147.97], sg['Cow'/517, l='MpServer', x=-10.50, y=68.00, z=-140.22], sg['Cow'/518, l='MpServer', x=-10.50, y=68.00, z=-141.53], sg['Cow'/519, l='MpServer', x=-11.44, y=66.00, z=-66.56], sg['Cow'/309, l='MpServer', x=-122.19, y=70.00, z=-139.09], sg['Cow'/308, l='MpServer', x=-133.53, y=68.00, z=-124.66], sg['Cow'/311, l='MpServer', x=-132.34, y=68.00, z=-124.19], sg['Cow'/515, l='MpServer', x=-14.50, y=69.00, z=-145.50], sg['Cow'/310, l='MpServer', x=-133.88, y=68.00, z=-120.97], sd['Bat'/2227, l='MpServer', x=-33.25, y=60.10, z=-135.25], sf['Chicken'/315, l='MpServer', x=-121.50, y=68.00, z=-110.50], sd['Bat'/5865, l='MpServer', x=-95.00, y=52.26, z=-161.84], sg['Cow'/520, l='MpServer', x=-5.81, y=66.00, z=-62.19], sf['Chicken'/317, l='MpServer', x=-121.50, y=67.00, z=-106.50], sg['Cow'/521, l='MpServer', x=-7.59, y=66.00, z=-70.41], sf['Chicken'/316, l='MpServer', x=-116.63, y=67.00, z=-104.59], sg['Cow'/522, l='MpServer', x=-10.09, y=66.00, z=-67.91], sf['Chicken'/318, l='MpServer', x=-131.47, y=68.00, z=-117.47], sd['Bat'/5083, l='MpServer', x=-63.16, y=57.11, z=-97.40], sn['Pig'/343, l='MpServer', x=-92.50, y=67.00, z=-101.22], sd['Bat'/5082, l='MpServer', x=-66.73, y=56.45, z=-102.99], sn['Pig'/342, l='MpServer', x=-90.50, y=67.00, z=-100.50], sd['Bat'/5436, l='MpServer', x=-70.13, y=46.67, z=-124.50], sg['Cow'/351, l='MpServer', x=-65.50, y=66.00, z=-60.50], tj['item.tile.mushroom'/350, l='MpServer', x=-70.09, y=12.13, z=-71.84], tj['item.tile.mushroom'/349, l='MpServer', x=-78.75, y=15.13, z=-92.09], tj['item.tile.mushroom'/348, l='MpServer', x=-76.13, y=15.13, z=-95.09], tj['item.tile.mushroom'/345, l='MpServer', x=-81.72, y=15.13, z=-89.13], sn['Pig'/344, l='MpServer', x=-92.50, y=67.00, z=-102.53], sd['Bat'/3627, l='MpServer', x=-58.47, y=58.00, z=-119.88], sd['Bat'/6028, l='MpServer', x=-47.11, y=59.51, z=-132.56], sn['Pig'/330, l='MpServer', x=-96.50, y=69.00, z=-103.50], tj['item.item.seeds'/328, l='MpServer', x=-96.88, y=41.13, z=-99.28], sd['Bat'/1183, l='MpServer', x=-82.38, y=61.48, z=-136.84], sg['Cow'/373, l='MpServer', x=-19.28, y=69.00, z=-155.44], sg['Cow'/372, l='MpServer', x=-19.94, y=70.00, z=-153.94], sg['Cow'/375, l='MpServer', x=-24.50, y=69.00, z=-138.50], sd['Bat'/1184, l='MpServer', x=-82.00, y=60.41, z=-136.66], sg['Cow'/374, l='MpServer', x=-30.94, y=69.00, z=-148.06], sg['Cow'/369, l='MpServer', x=-19.50, y=70.00, z=-174.50], sg['Cow'/368, l='MpServer', x=-21.50, y=70.00, z=-176.19], sg['Cow'/371, l='MpServer', x=-18.47, y=70.00, z=-152.47], sg['Cow'/370, l='MpServer', x=-17.50, y=68.00, z=-172.50], sg['Cow'/381, l='MpServer', x=-29.22, y=66.00, z=-67.50], bfg['scottsters'/211, l='MpServer', x=-76.53, y=71.62, z=-132.14], sg['Cow'/380, l='MpServer', x=-29.50, y=65.00, z=-71.50], sg['Cow'/382, l='MpServer', x=-30.81, y=66.00, z=-67.50], sg['Cow'/377, l='MpServer', x=-24.50, y=69.00, z=-141.50], sg['Cow'/376, l='MpServer', x=-26.50, y=69.00, z=-139.50], sg['Cow'/379, l='MpServer', x=-28.50, y=66.00, z=-69.50], sg['Cow'/378, l='MpServer', x=-24.50, y=69.00, z=-141.50], sg['Cow'/357, l='MpServer', x=-63.50, y=65.00, z=-58.50], sg['Cow'/352, l='MpServer', x=-67.50, y=66.00, z=-60.50], sg['Cow'/353, l='MpServer', x=-66.50, y=66.00, z=-58.50], sg['Cow'/367, l='MpServer', x=-29.66, y=72.00, z=-182.53], sd['Bat'/6217, l='MpServer', x=-109.25, y=45.51, z=-136.72], sg['Cow'/360, l='MpServer', x=-47.50, y=77.00, z=-196.50], sd['Bat'/6216, l='MpServer', x=-105.91, y=44.05, z=-131.50], sg['Cow'/361, l='MpServer', x=-43.69, y=79.00, z=-199.78], sg['Cow'/362, l='MpServer', x=-40.53, y=79.00, z=-200.72], sd['Bat'/6218, l='MpServer', x=-115.31, y=45.98, z=-134.41], sg['Cow'/363, l='MpServer', x=-47.50, y=74.00, z=-189.50]]
	Retry entities: 0 total; []
	Server brand: vanilla
	Server type: Integrated singleplayer server
Stacktrace:
	at bfb.a(SourceFile:285)
	at avx.b(SourceFile:1813)
	at avx.e(SourceFile:651)
	at net.minecraft.client.main.Main.main(SourceFile:103)

-- System Details --
Details:
	Minecraft Version: 13w36a
	Operating System: Windows 7 (x86) version 6.1
	Java Version: 1.7.0_17, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
	Memory: 80319800 bytes (76 MB) / 267812864 bytes (255 MB) up to 518979584 bytes (494 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
	AABB Pool Size: 21 (1176 bytes; 0 MB) allocated, 2 (112 bytes; 0 MB) used
	Suspicious classes: [com.ibm.icu.text.ArabicShapingException], [gnu.trove.TIntCollection], [gnu.trove.impl.HashFunctions, PrimeFinder], [gnu.trove.impl.hash.THash, TPrimitiveHash, TIntIntHash], [gnu.trove.iterator.TIterator, TAdvancingIterator, TIntIntIterator], [gnu.trove.map.TIntIntMap], [gnu.trove.map.hash.TIntIntHashMap], [gnu.trove.procedure.TIntIntProcedure], [gnu.trove.set.TIntSet]
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
	Launched Version: 13w36a
	LWJGL: 2.9.0
	OpenGL: Intel(R) HD Graphics GL version 2.1.0 - Build 8.15.10.2622, Intel
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Packs: [AlphaCraft.zip, Realistic.zip]
	Current Language: English (UK)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 1372 (76832 bytes; 0 MB) allocated, 18 (1008 bytes; 0 MB) used