MInecraft 14w18a Crashes when Single Players stars up

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

Time: 5/1/14 8:56 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: 113
Entity Name: entity.ItemFrame.name
Entity's Exact location: -81.97, 59.50, 275.50
Entity's Block location: -82.00,59.00,275.00 - World: (-82,59,275), Chunk: (at 14,3,3 in -6,17; contains blocks -96,0,272 to -81,255,287), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Entity's Momentum: 0.00, 0.00, 0.00
Entity's Rider: ~_ERROR~ NullPointerException: null
Entity's Vehicle: ~_ERROR~ NullPointerException: null