Guys, it is not a bug!
It is a feature that has not yet been added.
Therefore, it is not of any concern right now.
Thanks. I updated from Java version 1.6 to Java version 1.7, and it works fine now.
So, it appears that if you're using Java 1.6 and you have a world generated in Minecraft 1.6, and you try to load a new chunk in Minecraft 1.7, the new terrain generator makes you crash and the world can no longer be played in Minecraft 1.7 unless you update to Java version 1.7.
Oh boy, so many 1.6s and 1.7s.
There's a difference between a bug and a feature that has not yet been added.
People need to realize this.
I really don't know whether or not there's any way to confirm this.
It doesn't appear to still be an issue.
Dude.
That's a problem with his filter or MCEdit, not Minecraft itself.
You need to give more information than that, dude.
Try pictures.
Shouldn't you maybe, just maybe, put a description too?
If you don't give them any labels, information on your environment or even a description, Mojang can't help you.
This isn't a bug.
This is a feature that hasn't been implemented yet.
If every feature that is included in the PC Edition but isn't in the Pocket Edition yet was considered a bug, Pocket Edition itself would just be considered one big glitch.
Confirmed to still be a problem in 13w39b.