ah that sucks. oh well. maybe someone could revive this but it probably wouldn't happen since this game isn't very well known.
I come from BTG's YouTube channel, saw this and immediately downloaded it. I hope you find the drive to revive this, or perhaps allow others to implement it's system into other sonic level creators since this has a save/load boss function. Make a boss - make a level - load the boss into the level. Amazing stuff, super fun, hope you revive it.