'ntablewrapper' is null or not an object

Hi all,
I am newbie to jquery data table and here below is my code.

var oTable = $('#table').dataTable();
oTable.fnDestroy();
oTable = $('#table').dataTable( {
"bProcessing": true,
"bServerSide": true,
.
"fnDrawCallback": function( oSettings ) {
.
 },
"fnServerData": function ( sSource, aoData, fnCallback, oSettings ) {
oSettings.jqXHR = $.ajax( {
"dataType": 'json',
"type": "POST",
"url": sSource,
"data": aoData,
"success": function(data){
}
}
});

Its throwing an error 'ntablewrapper' is null or not an object in ie8
Any help in right direction would be appriciated.

Thanx in advance
amit