nl_tokens: Call the DropZone constructor using the View s scrolling element only after the grid has been rendered .
pl_tokens: function ( grid ) { var me = this ; if ( grid . rendered ) { me . grid = grid ; grid . getView ( ) . <mask> ( { render : function ( v ) { me . view = v ; Ext . ux . dd . CellFieldDropZone . superclass . constructor . call ( me , me . view . el ) ; } , single : true } ) ; } else { grid . on ( 'render' , me . init , me , { single : true } ) ; } }