Ear Master 6

[silverwolf]

I started with Ear Master Standard - Melody imitation
during the first three lessons I colud read the score ( or accuracy) in "Your Total Score" i.e. 25% - 50% Medium - or 90 % Excellent
well starting from fourth lesson "every answer" the score totalized is 0 "ZERO" and the written is always " Your answer is wrong - try next you'll do best" WITH NO SCORE OR SCORE = 0 all the time
is there anybody that could help me ... what has happened?
Thanks