Hi James, sorry, I copied the wrong function's name and my message was wrong.
What I meant is this: you need to call `org-sort-list-by-checkbox-type' *directly* on the list you want to sort -- not after `C-c ^ f'. `C-c ^ f org-sort-list-by-checkbox-type RET' will end up in loop because org-sort-list-by-checkbox-type contains a call to org-sort. I hope this clarifies things a bit -- I updated the hack on Worg: http://orgmode.org/worg/org-hacks.html#sec-1-3-9 Best, -- Bastien