There could be several reasons.
Browser based playback requires the Adobe Flash Player; please ensure you have the latest version by downloading from www.adobe.com
or contact the Help Desk
The library has been designed to work with the latest web browsers, especially Google Chrome, Firefox and Internet Explorer 9 and above, please test using one of these browsers. If you are still having problems, please contact the Help Desk
and register your issue. Remember to be descriptive because that will help us sort it out quickly.