I did a fresh install of Ispconfig 3.1 on a fresh Centos 7.2 vps which went flawlessly until I actually brought up the control panel. After logging in with Firefox 47 running on my Mac mini, none of the tabs like Email or Sites did anything. I then tried Safari, and the control panel worked as expected with Safari. Then I tried the control panel on Firefox 44 running on Fedora 24, and it also worked. Ispconfig 3.05 works fine on my Mac with Firefox 47 which is the system I use all the time. I installed the 'stable' version, but what I actually got was 3.1 Dev. Did I install the wrong version, or is there some problem with the stable version?