I have a superflat world, I spawned a ghast, had him shoot a fireball,and it hit the ground, blew up no problem. Then, I saved and exited, made a spawner out of the fireball with sethbling's filter for MCedit, and wehn i got near it, the fireballs would spawn going a direction, then hit the ground, make the explosion noise and the game would just close. I want them to be floating, not flying. Like this:
https://dl.dropbox.com/u/93179893/2012-08-25_21.34.50.png
Taking that also crashed the game...