The white background with a gray circle and exclamation point are typically a result of lack of available system resources to play a flash file. The grey exclamation point was implemented as a warning when flash shuts itself down to conserve browser resources.
Please try the troubleshooting tips below:
- Increase resources allocated to flash here (see image below for suggested settings) : https://www.macromedia.com/support/documentation/en/flashplayer/help/settings_manager03.html
- Close other applications running in the background
- Reload your browser’s page
- Enable/Disable Hardware Acceleration
- Clear your browser cache
- Restart your computer