This is the crash report
---- Minecraft Crash Report ----
// I'm sorry, Dave.

Time: 5/1/14 4:59 PM
Description: Rendering entity in world

java.lang.NullPointerException: Rendering entity in world
at cce.a(SourceFile:79)
at cce.a(SourceFile:53)
at cce.a(SourceFile:24)
at cbt.a(SourceFile:219)
at cbt.a(SourceFile:199)
at cbt.a(SourceFile:176)
at bxs.a(SourceFile:495)
at bxl.a(SourceFile:1146)
at bxl.b(SourceFile:935)
at bjf.ai(SourceFile:828)
at bjf.f(SourceFile:755)
at net.minecraft.client.main.Main.main(SourceFile:121)

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

– Head –
Stacktrace:
at cce.a(SourceFile:79)
at cce.a(SourceFile:53)
at cce.a(SourceFile:24)

– Entity being rendered –
Details:
Entity Type: ItemFrame (uh)
Entity ID: 280792
Entity Name: entity.ItemFrame.name
Entity's Exact location: -200.03, 7.50, -1457.50
Entity's Block location: -201.00,7.00,-1458.00 - World: (-201,7,-1458), Chunk: (at 7,0,14 in -13,-92; contains blocks -208,0,-1472 to -193,255,-1457), Region: (-1,-3; contains chunks -32,-96 to -1,-65, blocks -512,0,-1536 to -1,255,-1025)
Entity's Momentum: 0.00, 0.00, 0.00
Entity's Rider: ~_ERROR~ NullPointerException: null
Entity's Vehicle: ~_ERROR~ NullPointerException: null

– Renderer details –
Details:
Assigned renderer: cce@3b95266b
Location: -30.16,-76.42,140.35 - World: (-31,-77,140), Chunk: (at 1,-5,12 in -2,8; contains blocks -32,0,128 to -17,255,143), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Rotation: 90.0
Delta: 0.058058977
Stacktrace:
at cbt.a(SourceFile:219)
at cbt.a(SourceFile:199)
at cbt.a(SourceFile:176)
at bxs.a(SourceFile:495)
at bxl.a(SourceFile:1146)

– Affected level –
Details:
Level name: MpServer
All players: 1 total; [bxb['A_Fork'/280942, l='MpServer', x=-169.88, y=83.92, z=-1597.34]]
Chunk stats: MultiplayerChunkCache: 625, 625
Level seed: 0
Level generator: ID 01 - flat, ver 0. Features enabled: false
Level generator options:
Level spawn location: -302.00,4.00,-1386.00 - World: (-302,4,-1386), Chunk: (at 2,0,6 in -19,-87; contains blocks -304,0,-1392 to -289,255,-1377), Region: (-1,-3; contains chunks -32,-96 to -1,-65, blocks -512,0,-1536 to -1,255,-1025)
Level time: 2612763 game time, 7958 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: 72 total; [ya['Chicken'/280903, l='MpServer', x=-191.47, y=4.00, z=-1561.41], ya['Chicken'/280910, l='MpServer', x=-162.59, y=4.00, z=-1574.59], ya['Chicken'/280911, l='MpServer', x=-169.38, y=4.00, z=-1575.63], zg['item.item.egg'/280906, l='MpServer', x=-189.03, y=4.00, z=-1538.16], ya['Chicken'/280905, l='MpServer', x=-189.63, y=4.00, z=-1538.59], ya['Chicken'/280647, l='MpServer', x=-242.34, y=4.00, z=-1561.59], ya['Chicken'/280914, l='MpServer', x=-165.44, y=4.00, z=-1567.34], ya['Chicken'/280913, l='MpServer', x=-166.47, y=4.00, z=-1564.34], zg['item.item.egg'/280925, l='MpServer', x=-147.94, y=4.00, z=-1565.34], ya['Chicken'/280924, l='MpServer', x=-145.56, y=4.00, z=-1560.63], ya['Chicken'/280923, l='MpServer', x=-156.47, y=4.00, z=-1583.63], ya['Chicken'/280930, l='MpServer', x=-133.59, y=4.00, z=-1557.69], bxb['A_Fork'/280942, l='MpServer', x=-169.88, y=83.92, z=-1597.34], ya['Chicken'/280948, l='MpServer', x=-168.56, y=4.00, z=-1600.59], ya['Chicken'/280951, l='MpServer', x=-152.44, y=4.00, z=-1605.63], ya['Chicken'/280950, l='MpServer', x=-155.69, y=4.00, z=-1645.91], zg['item.item.egg'/280945, l='MpServer', x=-203.94, y=4.00, z=-1585.47], ya['Chicken'/280944, l='MpServer', x=-210.41, y=4.00, z=-1593.41], zg['item.item.egg'/280947, l='MpServer', x=-180.94, y=4.00, z=-1595.94], ya['Chicken'/280946, l='MpServer', x=-180.38, y=4.00, z=-1595.53], ya['Chicken'/280952, l='MpServer', x=-135.31, y=4.00, z=-1592.47], uh['entity.ItemFrame.name'/280834, l='MpServer', x=-202.50, y=9.50, z=-1455.03], uh['entity.ItemFrame.name'/280835, l='MpServer', x=-202.50, y=10.50, z=-1455.03], uh['entity.ItemFrame.name'/280832, l='MpServer', x=-202.50, y=7.50, z=-1455.03], uh['entity.ItemFrame.name'/280833, l='MpServer', x=-202.50, y=8.50, z=-1455.03], uh['entity.ItemFrame.name'/280838, l='MpServer', x=-206.50, y=11.50, z=-1455.03], uh['entity.ItemFrame.name'/280839, l='MpServer', x=-206.50, y=10.50, z=-1455.03], uh['entity.ItemFrame.name'/280836, l='MpServer', x=-202.50, y=11.50, z=-1455.03], uh['entity.ItemFrame.name'/280837, l='MpServer', x=-204.50, y=11.50, z=-1455.03], uh['entity.ItemFrame.name'/280842, l='MpServer', x=-206.50, y=9.50, z=-1455.03], uh['entity.ItemFrame.name'/280843, l='MpServer', x=-206.50, y=8.50, z=-1455.03], uh['entity.ItemFrame.name'/280840, l='MpServer', x=-204.50, y=10.50, z=-1455.03], uh['entity.ItemFrame.name'/280841, l='MpServer', x=-204.50, y=9.50, z=-1455.03], uh['entity.ItemFrame.name'/280846, l='MpServer', x=-204.50, y=7.50, z=-1455.03], uh['entity.ItemFrame.name'/280844, l='MpServer', x=-204.50, y=8.50, z=-1455.03], uh['entity.ItemFrame.name'/280845, l='MpServer', x=-206.50, y=7.50, z=-1455.03], uh['entity.ItemFrame.name'/280792, l='MpServer', x=-200.03, y=7.50, z=-1457.50], uh['entity.ItemFrame.name'/280788, l='MpServer', x=-200.03, y=11.50, z=-1457.50], uh['entity.ItemFrame.name'/280789, l='MpServer', x=-200.03, y=10.50, z=-1457.50], uh['entity.ItemFrame.name'/280790, l='MpServer', x=-200.03, y=9.50, z=-1457.50], uh['entity.ItemFrame.name'/280791, l='MpServer', x=-200.03, y=8.50, z=-1457.50], uh['entity.ItemFrame.name'/280784, l='MpServer', x=-202.50, y=10.50, z=-1456.97], uh['entity.ItemFrame.name'/280785, l='MpServer', x=-202.50, y=9.50, z=-1456.97], uh['entity.ItemFrame.name'/280786, l='MpServer', x=-202.50, y=8.50, z=-1456.97], uh['entity.ItemFrame.name'/280787, l='MpServer', x=-202.50, y=7.50, z=-1456.97], uh['entity.ItemFrame.name'/280781, l='MpServer', x=-204.50, y=11.50, z=-1456.97], uh['entity.ItemFrame.name'/280780, l='MpServer', x=-204.50, y=8.50, z=-1456.97], uh['entity.ItemFrame.name'/280783, l='MpServer', x=-202.50, y=11.50, z=-1456.97], uh['entity.ItemFrame.name'/280782, l='MpServer', x=-204.50, y=10.50, z=-1456.97], uh['entity.ItemFrame.name'/280777, l='MpServer', x=-206.50, y=7.50, z=-1456.97], uh['entity.ItemFrame.name'/280776, l='MpServer', x=-206.50, y=8.50, z=-1456.97], uh['entity.ItemFrame.name'/280779, l='MpServer', x=-204.50, y=9.50, z=-1456.97], uh['entity.ItemFrame.name'/280778, l='MpServer', x=-204.50, y=7.50, z=-1456.97], uh['entity.ItemFrame.name'/280773, l='MpServer', x=-206.50, y=11.50, z=-1456.97], uh['entity.ItemFrame.name'/280775, l='MpServer', x=-206.50, y=9.50, z=-1456.97], uh['entity.ItemFrame.name'/280774, l='MpServer', x=-206.50, y=10.50, z=-1456.97], uh['entity.ItemFrame.name'/280806, l='MpServer', x=-200.03, y=7.50, z=-1455.50], uh['entity.ItemFrame.name'/280805, l='MpServer', x=-200.03, y=8.50, z=-1455.50], uh['entity.ItemFrame.name'/280804, l='MpServer', x=-200.03, y=9.50, z=-1455.50], uh['entity.ItemFrame.name'/280803, l='MpServer', x=-200.03, y=10.50, z=-1455.50], uh['entity.ItemFrame.name'/280802, l='MpServer', x=-200.03, y=11.50, z=-1455.50], ya['Chicken'/280730, l='MpServer', x=-219.31, y=4.00, z=-1519.44], uh['entity.ItemFrame.name'/280732, l='MpServer', x=-208.97, y=11.50, z=-1456.50], uh['entity.ItemFrame.name'/280733, l='MpServer', x=-208.97, y=10.50, z=-1456.50], uh['entity.ItemFrame.name'/280734, l='MpServer', x=-208.97, y=9.50, z=-1456.50], uh['entity.ItemFrame.name'/280735, l='MpServer', x=-208.97, y=8.50, z=-1456.50], uh['entity.ItemFrame.name'/280739, l='MpServer', x=-208.50, y=9.50, z=-1456.97], uh['entity.ItemFrame.name'/280738, l='MpServer', x=-208.50, y=8.50, z=-1456.97], uh['entity.ItemFrame.name'/280737, l='MpServer', x=-208.50, y=7.50, z=-1456.97], uh['entity.ItemFrame.name'/280736, l='MpServer', x=-208.97, y=7.50, z=-1456.50], uh['entity.ItemFrame.name'/280741, l='MpServer', x=-208.50, y=11.50, z=-1456.97], uh['entity.ItemFrame.name'/280740, l='MpServer', x=-208.50, y=10.50, z=-1456.97]]
Retry entities: 0 total; []
Server brand: vanilla
Server type: Integrated singleplayer server
Stacktrace:
at buw.a(SourceFile:308)
at bjf.b(SourceFile:2069)
at bjf.f(SourceFile:764)
at net.minecraft.client.main.Main.main(SourceFile:121)

– System Details –
Details:
Minecraft Version: 14w18a
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 132907968 bytes (126 MB) / 724041728 bytes (690 MB) up to 954728448 bytes (910 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
Launched Version: 14w18a
LWJGL: 2.9.1
OpenGL: GeForce GTX 760/PCIe/SSE2 GL version 4.4.0, NVIDIA Corporation
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Anisotropic filtering is supported and maximum anisotropy is 16.
Shaders are available because OpenGL 2.1 is supported.

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)
Anisotropic Filtering: Off (1)