There has been some new development with Chrome browser in that their latest releases do not want to load local xml files using asynchronous requests when testing pages locally on your computer and we do rely on such requests in our 360 viewer to load viewer configuration files. This is of course not an issue when files are accessed / loaded online from your webserver or from your local webserver (ie localhost / 127.0.0.1).
Chrome has a special key that they give developers and testers to avoid this issue in their local testing. This is very simple to add to your Chrome also. Just go to your desktop where you launch Chrome, then right click on the Chrome icon and then on the Shortcut tab you will see the Target field - just add the following to the end of the path in that field: --allow-file-access-from-files
Mine for example looks like this : C:\Users\...\chrome.exe --allow-file-access-from-files
This is a bit more convoluted on Mac OS which we haven't tried yet but you can see what's involved in this post.