I'm changing from Simple view which was wonderful. I'm trying Juicebox and I get an error on Mac OS Sierra with Firefox (63.0.1) Just a blank white page , Safari (11.0.2)  Config file not found. and Brave (0.25.2) Can not display in this browser .  All of these are on a MBPro.  On another Macbook Air the gallery will open with only one broswer Firebox 59.0.2. With Safari (11.1) I get a config file not found.  I can't use this if it only works on 1 out of 5 browsers and if it has to be an older browser.  Thanks for any hints. Till then I will stand by and wait and see. Cheers...