Good to hear you got it working. Re-installing or using a fresh profile
seems to fix most issues.
Yes, the new FF dev cycle is frustrating, but once the kinks are worked
out at all levels I think it will be good long-term. We need to get away
from the concept of confirmed updates completely. Everything should
auto-update in the background and just work. I realize this is far off,
but we need to start somewhere.
Christoph