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 an Antergos Linux system. The issue seems to have started when I tried to install the flashplugin 26.0.0.151-1 package from the 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 followed the troubleshooting guide, but haven't actually found any steps I'm able to do, because they all require launching Firefox, and even safe mode isn't working. Although I'm a bit confused why when I choose "Firefox won't start" and "The problem still occurs in safe mode", it gives me three links full of steps that all begin with opening the FIrefox menu. How can I do that if Firefox won't start, even in safe mode? :) https://support.mozilla.org/en-US/kb/firefox-wont-start-find-solutions#w_other-error-messages https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems