Data Table Error :: Cannot read property ‘fnSetData’ of undefined

Initial code looks like this..

var oTable = $('#sim_data').dataTable( {
    aoColumns: [ {"sName": "ss" },{"sName": "sim_no"}, {"sName": "sale_price"}, {"sName":   "purchased_price"},{"sName": "status"} ]

}).makeEditable({ 

    .....       
});

Only when I try to initialize aoColumns as above returns error

Cannot read property 'fnSetData' of undefined

and with out this initialization it works