On Sat, 4 May 2019 09:27:26 -0700, Ross Boylan wrote: > Running firefox-esr on buster I don't seem to be able to install > addons. I just read that they fixed it in a new release: https://news.softpedia.com/news/mozilla-releases-firefox-66-0-4-for-pcs-and-android-to-fix-major-add-ons-issue-525888.shtml