I had the same problem a few weeks ago and now resolved

. try this Baz. Clear your 'Cache & Cookies' and temp. files, log off,
unplug all units from the mains A/C supply, ( go and make a cuppa tea !!) reconnect & reboot. That should do the trick

ZB Custom S10 3+4, DD3 Digi delay, ZB vol. pedal. Peavey Nashville 400