Please take the following actions:
- Clear your cache and cookies. In IE, disabling the compatibility settings resolves the issue. You may also want to try to set to default settings.
- Make sure all of your Adobe software is up-to-date, especially Adobe Flash Player and Shockwave Player.
- Make sure all your Java software is up-to-date.
- Try different browsers (such as Google Chrome and Firefox).
- Check your internet speed.
- Refresh your screen or reboot the system.