java.lang.NullPointerException: Getting biome

I wanted to make a skin statue with MCedit. But, after I made the statue, closed MCedit and entered the world, I crashed!! =(

PC info:
Minecraft Version: 1.7.2
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
Memory: 135969656 bytes (129 MB) / 277348352 bytes (264 MB) up to 518979584 bytes (494 MB)

Crash report @ http://notepad.cc/crashreport
Password: mojangAB