Rated 5 out of 5 stars

Hi ChoGGi

Really love this Add-On and been using it for years, but the new restrictions since FF43 are becoming an issue.
As you and some have said, reinstalling 0.4.0 does initially indicate that it has passed the 'signed' check after a restart. But a subsequent restart again, and the 'could not be verified' error returns ... same also with your 0.4.5 version.
Hope you can fix these once Mozilla get through the AMO's

This review is for a previous version of the add-on (0.4.0). 

Well I just had an epiphany of stupidity of why the "not signed" comes up only after rebooting Firefox.

when an extension is signed it has a manifest.mf (along with other files) added and since CB changes content/mosaic.png to the mosaic you use, then manifest.mf has a different hash stored for mosaic.png.

Yea, I'm kicking myself over this one :)

Rated 4 out of 5 stars

Grrrr, Mozilla have decided to screw Firefox up just before Christmas ... CuteButtons 0.4 worked well on FF42, but FF43 now saying it is not compatible, yet your own Add-Ons page says its fine up to future version FF46. But after a restart FF disables it again.

Superb add-on, so would love a fix before Christmas

This review is for a previous version of the add-on (0.4.0). 

There's a new version in the queue, hopefully AMO will sign this one (Queue Position: 46 of 91).
You can go back to v0.3.7 for now, it's signed.