Ruario's latest-firefox script has been great for me with 14.0. until today.

I used a previous version (1.4.1) to try to update to Firefox 61. Then Firefox would not open. Realizing that I had used a previous version, I got the new version (1.5.2) and tried that. However, I get the response "Firefox 61.0.1 is already installed; exiting." Thereupon I used slackpkg to remove the firefox 61.0.1 package.

Now when I try latest-firefox.sh (current version), I get the response "/tmp/mozilla-firefox-61.0.1-i686-1ro.tgz already exists; exiting".

Is there a way to fix this so that I can use the script?

/tmp/mozilla-firefox-61.0.1-i686-1ro.tgz is the package built from Ruario's latest-firefox script

delete it and try again

Thank you, however, I thought of doing that but when I looked up whether it's okay to delete a file from /tmp, I saw lots of warnings. Can I harm anything by simply deleting that file?

No. Things in /tmp are by definition temporary.

As the old joke goes, Well, yeah, but...

Temporary means "shouldn't be re-used in case you reboot or logout/login" as well as "hey, you can delete this whenever you want to".

The package you mentioned is in the "hey, you can delete this whenever you want to" category.

Stuff like /tmp/<username>/pulse-<random_string> or sockets used by (admittedly non-standard) postresql are in the "shouldn't be re-used in case you reboot or logout/login" group. Depending on the application, things may continue to work even after you delete a file in that category (the file contents really don't go away until nobody is using it). The absolute worst case would require a reboot after deleting something in /tmp that was used by something you normally use in the running system.

Good clarification. I should have said that deleting things in /tmp won't have any serious ill effects, but it could have (probably minor) negative affects on running applications.

Okay, I deleted the file /tmp/mozilla-firefox-61.0.1-i686-1ro.tgz and then tried again.

This time the script ran okay, but firefox won't open. When I tried to open firefox, I received error message "firefox: symbol lookup error: /usr/lib/firefox-61.0.1/libxul.so: undefined symbol: dbus_validate_bus_name."

It is very possible that the libraries in Firefox are now too new for your (almost 6 years old) 14.0 system. It looks like libxul.so might rely on a function of dbus (dbus_validate_bus_name), which doesn't exist.

If this is the case, it likely leaves you with 3 different options.

1. Downgrade to a previous version of Firefox
2. Try and build your own Firefox against the libraries in your system
3. Upgrade to a newer version of Slackware

Thank you. That must be right.