To be sure it isn't an error in downloading, click the Refresh button, or press F5.
If the error persists, and you are not a developer testing a website, you should click No to ignore the error.
To avoid script errors in the future, you can turn off script debugging and notifications in Internet Explorer.
Script error debugging and notifications are turned off by default. If they have been turned on, follow these steps to turn them off again.
Open Internet Explorer by clicking the Start button . In the search box, type Internet Explorer, and then, in the list of results, click Internet Explorer.
Click the Tools button, and then click Internet Options.
Click the Advanced tab, select the Disable script debugging Internet Explorer) and Disable script debugging (Other) check boxes.
Clear the Display a notification about every script error check box, and then click OK.