I have a div#timeline which is a Sortable. There are multiple  
instances of div.clip in a separate div which are each draggable, and  
when dropped over div#timeline get cloned into #timeline and the  
Sortable is called again to reset everything. Each cloned .clip can be  
trimmed (this is a video editor) by changing its start and end  
timecode, and the resulting width is calculated and set. All of this  
works just great. The Sortable float model is a nice fit for the  
constraints of the real-world problem.

Now, my client would like to be able to drag still photos over the top  
of this timeline, and drop them to individual movie clips. Each movie  
clip could accept multiple photos. Ideally, these photos could be  
dragged to set their timecode position relative to the parent movie  
clip, although that's not my problem at the moment. I'm still stuck at  
getting each div.clip (which is a child of a Sortable) to accept a  
drop from a separate draggable.

I've tried adding each div.clip to the Droppables with Droppables.add  
as it's cloned into place, but while that seems to work (the classname  
is modified when you hover over it as though it will accept the drop)  
when you do try to drop a div.photo onto it, nothing happens.

I've tried various combinations of greedy:false on the elements, to no  
avail. I also tried using the tree:true, treeTag:'div' parameters, and  
got nothing but a mess.

Is there some rule that I'm violating here? Can you nest droppables to  
this degree with any success?

Thanks in advance,

Walter

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