I upgraded my exe to latest beta 1.7 today - webUI now gives the octet stream error, if I switch over to latest 1.6 stable the webUI works as usual. I did a fresh 1.7 install, default ports with no alternate settings - octet stream error Changing nothing and launching with latest 1.6 exe, everything works. So for now - no beta 1.7 if I want web access.