I tried doing it myself for a while, then finally gave up and copy/pasted the 'Hint'. That didn't work either. Meaning: There is something fundamentally wrong with this exercise.
The error is: Oops, try again. It looks like you didn't print out the string 'Ruby!' 30 times.
counter = 0 loop do counter += 1 print "Ruby" break if counter > 30 end