Today I downloaded MCEdit 2.0 from this website: http://www.mcedit.net/downloads.html. I was playing around with it but I kept crashing it and couldn't figure out how to do it. What I need to do is load a world and destroy a command block that is constantly running /kill. Every time I do something it crashes and I can't open it. Can someone tell me how I can edit a command in a command block on MCEdit? Thanks.