My game crashed when I downloaded a texture pack and I can't delete it and redownload it it still has the texture pack there even though i deleted it

---- Minecraft Crash Report ----
// Everything's going to plan. No, really, that was supposed to happen.

Time: 7/7/13 1:04 PM
Description: Registering texture

bhy
	at bhv.c(SourceFile:58)
	at bhz.b(SourceFile:92)
	at bhz.a(SourceFile:59)
	at bib.a(SourceFile:69)
	at bib.a(SourceFile:58)
	at bib.a(SourceFile:49)
	at atn.O(SourceFile:377)
	at atn.d(SourceFile:598)
	at net.minecraft.client.main.Main.main(SourceFile:101)


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

-- Head --
Stacktrace:
	at bhv.c(SourceFile:58)
	at bhz.b(SourceFile:92)
	at bhz.a(SourceFile:59)

-- Resource location being registered --
Details:
	Resource location: minecraft:textures/atlas/blocks.png
	Texture object class: bhz
Stacktrace:
	at bib.a(SourceFile:69)
	at bib.a(SourceFile:58)
	at bib.a(SourceFile:49)
	at atn.O(SourceFile:377)

-- Initialization --
Details:
Stacktrace:
	at atn.d(SourceFile:598)
	at net.minecraft.client.main.Main.main(SourceFile:101)

-- System Details --
Details:
	Minecraft Version: 1.6.1
	Operating System: Mac OS X (x86_64) version 10.8.4
	Java Version: 1.6.0_51, Apple Inc.
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
	Memory: 23701184 bytes (22 MB) / 130326528 bytes (124 MB) up to 1069416448 bytes (1019 MB)
	JVM Flags: 1 total; -Xmx1G
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Launched Version: 1.6.1
	LWJGL: 2.9.0
	OpenGL: ATI Radeon HD 2600 PRO OpenGL Engine GL version 2.1 ATI-8.12.47, ATI Technologies Inc.
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Pack: ravands256
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: ~~ERROR~~ NullPointerException: null