Dropzone making non-file draggables to bug (simple fix)

[theredled]

When you use for instance Jquery UI to make a file list to be droppable (for something else than a file), a messages error occurs:

Cannot read property 'types' of undefined

There is a simple fix, line 1862, change:

ss.DragAndDrop = {

    _dragFileCheck: function( e ) {
        if ( e.dataTransfer.types ) {

To

ss.DragAndDrop = {

    _dragFileCheck: function( e ) {
        if ( e.dataTransfer && e.dataTransfer.types ) {