TacticsTrainer is corrupt

Sometimes it freezes. Everytime I get it wrong it counts. Whenever it freezes and doesn't count, it comes after a correct answer or a problem solved. Today it kept freezing and didn't count ten correct answers, but counted all of my wrong answers. Aside from that some moves seem to work the same in reverse order. Then when it shows you the solution the pieces move so fast you can't see it. I'm not sure who set this up to only freeze and not count toward your score after you get it right.

I was on it today and had no issues with it.  

Tactics trainer on V3 is argueably the best on the net IMO

For days now tactics trainer has been freezing. I make a move, says "correct" then timer stops, frozen. Cache cleared, restart, makes no difference. Any suggestions?