Originally Posted by
tennisboy
Every time I find an opening in Blaine online and try to book it, I get this at the last screen--anyone know why?
My guess is that someone else booked it after you saw the spot (so the website showed it to you too), but before you finalized your booking. A request to the server to book a spot that was already booked then results in an error.
Spots for Blaine that appear during business hours tend to be snapped up within 60 seconds.