I've been using 1.0.9 the last few days and just wanted to report a bug I've encountered. I can't seem to place Ho-oh anywhere without receiving the error message "Invalid input. Please make sure that the minimum and maximum level must be between 1 and 100." I've tried placing Ho-oh in several different areas with different level ranges, and can't find a way around this error.
Otherwise, fantastic work on this editor--very clean and easy to use.
Edit/more info: I'm using a clean European White version ROM.