All my Blend4Web.html files (which worked fine on my Mac) don't work anymore. I double click the html and I see the Blend4Web Wheel for a couple of seconds (as usual), then the buttons appear, but the 3D Object does not load. I never updated the drivers for the gpu and it always worked. Apart from the Mac OS update, the only other thing I changed was to always use the the graphic card and not switch between the internal and external. Any ideas why this does not work anymore would be great. Thanks.