IF YOU HAVE ANY PROBLEM WITH THE USING OF THE EDITOR, PLEASE WRITE DOWN HERE, THE BUGS WILL BE CORRECTED ON THE NEXT RELEASE
Check more Megaman stuff on MegamanX9 website/forum
Check more hacking tools for games on RomHacking
EDIT: Some ROMs aren't recognized from MegaED X. This because they have an special header long 512bytes. Simply remove it with an hex editor and the rom will be load. The correct file size is 1.572.864 bytes. I've already fixed this little bug this morning but I'll release the update version with other bugfixs and features later.