Minecraft remains at the "Building Terrain" screen when "Cows" (without the quotes) is used as the world generating seed. Crash report is attached.
java.lang.NullPointerException: Exception in server tick loop
at azi.a(SourceFile:124)
at azi.apply(SourceFile:121)
at beh.a(SourceFile:53)
at beh.apply(SourceFile:50)
at bei.a(SourceFile:67)
at bei.a(SourceFile:90)
at azh.f(SourceFile:49)
at azh.c(SourceFile:39)
at bff.a(SourceFile:551)
at aqr.a(SourceFile:290)
at bif.b(SourceFile:20)
at arv.a(SourceFile:261)
at arv.a(SourceFile:49)
at arj.a(SourceFile:389)
at asn.a(SourceFile:56)
at bgt.a(SourceFile:472)
at qt.a(SourceFile:174)
at bff.a(SourceFile:872)
at qt.c(SourceFile:104)
at net.minecraft.server.MinecraftServer.k(SourceFile:314)
at cyk.a(SourceFile:111)
at cyk.i(SourceFile:127)
at net.minecraft.server.MinecraftServer.run(SourceFile:418)
at java.lang.Thread.run(Thread.java:745)
Confirmed: