I&#39;m running GNU Emacs 23 on OS X and am using the most recent version of org-mode from github.  When attempting to sort a list of items via org-sort and selecting p[r]operty, I get the following error:<div><br></div><div>
wront type argument: integer-or-marker-p, nil</div><div><br></div><div>Any ideas?</div><div><br></div><div>Thanks,</div><div>Dev</div>