Game crashes on launch

The splash screen shows up for a couple of seconds before the game crashes. Does not happen in 14w27a.
Description: Initializing game

Stacktrace:
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.ArrayList.rangeCheck(ArrayList.java:638)
at java.util.ArrayList.get(ArrayList.java:414)
at cpe.<init>(SourceFile:24)
at cpf.a(SourceFile:67)
at cox.f(SourceFile:362)
at cox.a(SourceFile:134)
at cpa.a(SourceFile:23)
at cnq.a(SourceFile:99)
at bmi.ag(SourceFile:424)
at bmi.a(SourceFile:288)
at net.minecraft.client.main.Main.main(SourceFile:120)