We have found that using the latest version of Java available in conjunction with the latest browser version available seems to be the most compatible with our system.
To fix the problem and ensure you have the most current version, you should remove all the old Java runtime packages from your computer, and reinstall a current version.
To remove Java, go to the "Add/Remove Programs" function in your "Control Panel" folder. Scroll down the list to the "J's" and remove all programs with Java. When you restart your browser and visit a site containing Java, you will be prompted to download the latest version. Proceed with the recommended download.