Most softboxes/octaboxes can be made to fit, if you use the proper speedring. I am not sure if the Profoto stuff uses a standard speedring or not, and if not, do they make one for Paul C. Buff equipment.
We make easy open softboxes, though we do not have a 60 inch octabox. We also have our PLM system, which can very closely mimic the effect of a large softbox.
http://www.paulcbuff.com/plm.php If you need to purchase a speedring, make sure it is compatible with Paul C Buff, Alien Bees, White Lightning, Balcar, or Einstein. These are all the same mount, though different manufacturers use different brands as their descriptor.
****Update, yes, that softbox will fit other brands with the right speedring. I now recall Creative Light was a Profoto brand, and if I recall correctly, the speedring was a little more rounded than others, and it was not (in my opinion) the ideal shape. The outer diameter should be the same size as standard speedrings (including ours), so others should work. Please keep in mind, we have not specifically tested these items, but there should be no issue.