The installation appeared to work (no obvious errors), but the graphical login failed for both root and my user account. Logging in via Ctrl-Alt-F1 to a console worked, but no commands were available - not even 'ls' or 'cd'. I could run some commands by typing in the full, long, '....profile...' command name; but there's something seriously wrong with having to do that.
I couldn't find an installation log that might be helpful; but if there is such a thing that might be useful for troubleshooting, let me know.