error data(...)option null in IE6 for ui.draggable .remove()

Question

hi everyone when i try to remove the ui.draggable in the drop function i get the above error .that is only for internet explorer6 but for crhome and firefox it works probably.i have tried a work arround but it still does not works.the error has something to do with the jquery-ui.js file

$(document).ready(function(){
         $('input#hint').keyup(function(){  
         var hint =$('input#hint').val();    
          if(hint.length>2)
          {
           getJSON('search',hint);
          }
          $('#suggestions').live('mousedown',function(){$('.items').draggable();});
          $('#selectediris').droppable({
                                        accept:'.items',
                                        over:function(e,ui){$('#selectediris').css({backgroundColor:'red',opacity:0.2});},
                                        out:function(e,ui){$('#selectediris').css({backgroundColor:'white',opacity:1});},
                                        drop:function(e,ui)
                                                          {
                                                          //$('#selectediris').html('');
                                                          $('<div></div>').html(ui.draggable.html()).addClass('dropitems')
                                                          .removeClass('items').appendTo('#selectediris');
                                                          $('#selectediris').css({backgroundColor:'white',opacity:1})
                                                          var dragID=$(ui.draggable).attr('id');
                                                          $('#'+dragID).addClass('drag');
                                                          }
                                       });
          });

});