Hi Chen, kindly send us your diagnostic report so we can look into the error more closely. You can send your report as an email attachment to support[at]brillkids[dot]com, or you can send it directly from your Little Reader's Support Tools window.
For instructions on how to create a diagnostic report, see:
http://support.brillkids.com/entries/20438423-How-to-Create-a-Diagnostic-Report-for-your-BrillKids-Learning-SystemIf you can't open Little Reader, you will be able to create your report by running Support Tools from your Start menu, as mentioned in the article.
We look forward to receiving your diagnostic report!