The Google Chrome browser (from version 45) no longer supports Microsoft Silverlight. DecisionsFirst Modeler uses Microsoft Silverlight and so Chrome users will need to use Windows Internet Explorer (IE) browsers.
The Windows 10 IE browser supports Silverlight, but the Microsoft Edge browser does not. Please use the IE browser if you update to Windows 10. It is located under All Apps/Windows Accessories, or type Internet Explorer into search.
An installed version is available for download. See DecisionsFirst Modeler Downloadable Application for more information.