i9 knw tht this might just be another stupid comment, but my score looks just like theirs but without the yellow highlight and the "_root" is blue, is tht a problem?
omg, i was stuk on page no 9 for hours!
and then i read ninjano1's comment
totally saved me!
btw, all the people having the problem with class or interface couldn't be loaded, try ninjano1's comment
 "Mr. Awesome!"){kind=icon}
 "Learn to use CS3"){kind=icon}
 "Platformer Tutorial"){kind=icon}
 "Shootorial #7"){kind=icon}
 "Shootorial #6"){kind=icon}
 "Shootorial #1"){kind=icon}