If your web browser is complaining about JavaScript errors or functions not being defined, then it is possible that you are not retrieving the latest versions of pages from your Confluence instance.

To fix this, you need to clear your browser cache. Follow the instructions for your particular browser:

• Internet Explorer
• Firefox - Open the Preferences -> Privacy -> Click on the "Clear Cache" button
• Safari - Go to the Safari menu -> Clear Cache

If the errors mention "NS_ERROR_NOT_AVAILABLE" then it is most likely due to CONF-5091. Unfortunately there is no fix for that issue at this stage.

Another possible cause of javascript errors is interference by antivirus software. For example, it has been reported that NOD32 antivirus software can attempt sanitation of some confluence javascript when that javascript is served by IIS.

If you are still having problems, please create a support request.