ClickDimensions has updated the web tracking script in order to remove some functions that are being depreciated by some browsers. The older script will continue to work for most browsers for some time, however it is important to update your script as soon as possible. To find your new script, in your CRM go to Settings > ClickDimensions Settings > Tracking Script.
Choose Tracking Script.
You can copy the script there and replace the ClickDimensions script that is already on your website. To learn more about web tracking with ClickDimensions read this help article.