Ok, I see my mistake. I re-run the installer and see this in yellow (which I presume doesn't mean "failed" as that would be red, but "caution, do this", which in fact is what it is telling me to do):
File was saved in /tmp/fx7ROK0g, please move to /var/www/example/froxlor/lib/userdata.inc.php
A quick check of my system shows no file or directory named "fx7ROK0g' anywhere in the file manager. So while it is telling me to move a file that was created, it was never created. I have checked for hidden files and everything under '/var/*" and there is no file with that name.
Please advise...