Buddypress 1.6 upgrade problem with members directory

Since upgrading to BP 1.6, when I go to the members directory and try to change it from it from "Order by: Last Active" to "Order by: Alphabetical" or "Order by: Newly Registered," nothing happens. When I firebug the page, I get the following:

TypeError: jQuery(".bs_lightbox").colorbox is not a function
[Break On This Error]

jQuery(".bs_lightbox").colorbox();

is this the source of the problem? If not, what is?