Crash

---- Minecraft Crash Report ----
// Surprise! Haha. Well, this is awkward.

Time: 12/03/14 19:42
Description: Updating screen events

java.lang.IllegalAccessError: tried to access field bpx.b from class com.prupe.mcpatcher.TexturePackChangeHandler
	at com.prupe.mcpatcher.TexturePackChangeHandler.beforeChange1(TexturePackChangeHandler.java:135)
	at bqx.c(SourceFile:103)
	at bqx.a(SourceFile:92)
	at azd.b(SourceFile:488)
	at bgh.a(SourceFile:151)
	at bcd.a(SourceFile:172)
	at bgh.a(SourceFile:158)
	at bcd.d(SourceFile:236)
	at bcd.k(SourceFile:211)
	at azd.o(SourceFile:1303)
	at azd.ad(SourceFile:753)
	at azd.e(SourceFile:704)
	at net.minecraft.client.main.Main.main(SourceFile:103)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)
	at net.minecraft.launchwrapper.Launch.main(Launch.java:27)


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