IE7 Droppable issue

IE7 Droppable issue


I'm working on a filemanager that uses drag and drop to move files.
The app uses some ajax to move between folders when they are clicked
on... Everything works in FF and Saf, but in IE7, droppable seems to
stop things up, but not right away.
In the first level of files/folders, drag and drop work fine. But when
I go down a level, it stops working in IE7, giving a generic "Problems
with this Web page might prevent it from being displayed properly...".
Drag + drop stop working at this point. If I remove droppable,
draggable works fine on every level (thats why i assume it is
something in droppable).
Anyone have any experience with something like this? Perhaps the
droppable function is being called again and this stops things up? I'm
testing with the most simple droppable config:
$(".droppable").droppable({
     hoverClass: 'ui-state-highlight',
            drop: function(event, ui) {
                ui.draggable.hide('slow');
            }
        });