Call to GetCustomUI() for RibbonID "Microsoft.Excel.Workbook"

Hi, I upgarded from Office 2010 to 2013 and whenever I open excel I get a dialog box indicating "Call to GetCustomUI() for RibbonID "Microsoft.Excel.Workbook" click OK and then work

Samle thing happens when I right-click a cell to do a copy or cut i GET THE EXACT SAME ERROR.

Thanks for your help