Freedns "invalid update URL"

I'm getting "ERROR: Invalid update URL (2)" every time I try to update a freedns.afraid.org address which worked previously. Also, when trying to use "--verbose" or "-V" to get more information, neither seem to work - I get a variety of different error messages when I try any combination of -V/--verbose either with a no number after them, a number (1-5) immediately after them (no space), a number after a space after them (1-5) or "=5" after them.