fixing column disables tr on click

DataTable setup:
oTable = $('#planning').dataTable({
"aaData": dataSource["aaData"],
"aoColumns": tableColumns,
"bFilter":false,
"bSort":false,
"sScrollX": "100%",
"bScrollCollapse": true,
"bInfo":false,
"bLengthChange":true,
"bPaginate":false
});

        /* first column fixed */
    new $.fn.dataTable.FixedColumns( oTable, {
            leftColumns: 1,
            rightColumns: 0
        });

            /* listen clicks on first column */
    $(document).on( "click", "#planning td:first-child", function() {
           var nTr = getSelectedRow($(this).html());
             toogleRow($(this).closest('tr'), nTr);
    });

Problem is, clicks on the first column are not captured on the first column in the table if new $.fn.dataTable.FixedColumns( oTable, {.... is executed. If no fixed column is set, clicks on the 1st column works properly.
Need both things to work together, any suggestion?