As I moved my mouse over a child menu item, the whole menu would reposition itself 200px to the right.
It only took a couple of minutes to realize what the problem was, but if it happens to you, check your file extensions.
Not having the .htm at the end of the file name (URL) causes this interesting behavior. Notice the second item is missing .htm
addmenu(menu=["stve",,,200,1,"",style1,,,effect,,,,,,,,,,,,,
"sofTV.ShowAndTell Lecture","education_demos.htm",,"Demo",1,
"Another Lecture","education_demos",,"Demo",1,
"E-Learning sofTV.Presenter.2","education_demos.htm",,"Demo",1,
"E-Learning