Hi ShenLi,
Sorry for missing your post! We are checking your Diagnostic Report now and I'll reply here once we find a solution for you.
** ETA **Kindly try doing a Repair of Little Math and see if that helps fix the problem. For instructions on how to do this, you may refer to this article:
How to Repair your BrillKids Learning System
http://support.brillkids.com/entries/20433732-how-to-repair-your-brillkids-learning-systemOnce you've done this, please open Little Math and check if you can play the lesson you are in (Day 233) without getting any problems. If it still doesn't work, do let me know and send a new Diagnostic Report so we may continue troubleshooting.
I hope this helps!
