crash on a new world

Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here

What actually happened was...:
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Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...
3. ...

java.lang.NullPointerException: Invalid Biome id
	at ags.a(SourceFile:82)
	at agq.<init>(SourceFile:26)
	at agp.a(SourceFile:52)
	at agp.b(SourceFile:61)
	at ags.a(SourceFile:61)
	at aoo.a(SourceFile:933)
	at afs.a(SourceFile:116)
	at afs.a(SourceFile:1047)
	at bmm.j(SourceFile:1343)
	at bmm.a(SourceFile:928)
	at bmm.b(SourceFile:816)
	at azi.ah(SourceFile:787)
	at azi.f(SourceFile:711)
	at net.minecraft.client.main.Main.main(SourceFile:152)