Upfront Errors Help ASAP Please!

Have an error on page that I could use some quick help with if at all possible. I have client meeting tomorrow morning. I have been editing the home page here: http://centralrentalsinc.com and now have the following error message showing : Warning: DOMDocument::loadHTML() [domdocument.loadhtml]: ID selection-marker-1 already defined in Entity, line: 4 in /home/rickcentral5/public_html/wp-content/themes/upfront/elements/upfront-text/lib/upfront_text.php on line 21

Any suggestions would be greatly appreciated!

I am only getting this on the home page, I updated to the latest version of upfront tonight. However, it did not see an error until a few changes were made to this page.

Please advise and thanks in advance,

Nick