Since several days ago when I try to perform backup with FEBE, it does nothing at all, as if I didn't click the button. Similarly, when I get the notification to run FEBE again as two weeks have passed, I click OK and nothing happens. Normally it takes a few minutes and I need to set it to ignore unresponsive scripts. I checked the backup folder on my external drive and nothing gets put there when this happens.
I've got FF ESR 52.7.4 and FEBE 8.9.3.1.