I posted about this issue on the Mozilla support forums already, and they said it could be a packaging issue, so I’m hoping someone here can help…I’m copying pretty much the same post below, and you can see it at:
I’m receiving the following error when trying to launch firefox:
“The application has been updated, but the SQLite library wasn’t updated properly and the application cannot run. Please try to launch the application again. If that should still fail, please try reinstalling it, or visit https://support.mozilla.org”
This is while launching Firefox 55 on Antergos. The issue seems to have started when I tried to install the flashplugin 220.127.116.11-1 package from the ‘extra’ repository and updated Firefox, after which I tried to restart Firefox and received this error. I tried uninstalling this plugin using the package manager, which did not change anything, and the same after I then tried reinstalling it. Tried uninstalling and reinstalling Firefox too. I’ve also tried deleted my .mozilla folder, and a reboot, but I’m still getting the same error.
I was not able to find any mention of this error message with a web search or on the Firefox support pages; I also followed the troubleshooting guide, although didn’t actually find any steps I’m able to do, because they all require launching Firefox, and even safe mode isn’t working.