every time I go into my map and goes toward a House then there is crash

Please do not mark issues as private, unless your bug report is a security issue containing information that may compromise your server/client.

Note:

Description: Rendering entity in world
java.lang.NullPointerException
	at bbx.a(SourceFile:38)
	at bbx.a(SourceFile:12)
	at bbu.a(SourceFile:195)
	at bdr.a(SourceFile:27)

Duplicate of MC-4433

MC-4433 was fixed for 12w49a , so that issue "should" be fixed in 1.4.7.
Did you play around with FallingSand-Spawners ?
And how did you manage to ssign the Entity ID of 64683 to the sand ?

what to do?

Can you zip and attach the world ?

But you have placed a FallingSandSpawner , didn't you ?

I have set it to fallingSandSpawner, and it has so destroyed my world just as soon as I when going in the area where it can, should I put a more spawne or what do you think?

REMOVE IT !

i can't go ito it, my world crash if i going to close...

You've managed to place it, so you'll manage to remove it.
My last message here.
Plonk.