I booted into one of my snapshots which has Firefox installed... I got a popup informing that there was an update via the internal updater, which I allowed...but it ran into trouble... Spoiler: screenshots
So, I then clicked on the link [as per link in screenshot above], and then got the Stub.exe, but then ran into problems with that, too: Spoiler: screenshots So, now I have the full installer which I saved, and will run later...So, maybe I will get Firefox updated, finally... Third time should be the charm. Will advise the outcome. But why so hard to update the program in the first place?
I have tried shutting down my other programs, e.g. WSA, SpyShelter, Emsisoft, etc, when I have tried to update, previously from the current installed versions. Seems, I have to run the latest full installer, and then I get it to update without a problem. Weird, but that is how it goes.