getValue coming back as null but is not

Hi all,
I am stumped.  I have a Suitelet that runs a saved search, we process the results and then display info.  IT has been working for months but suddenly it is producing an error.

Here is part of the code

            salesSearch.run().each(function(result) {
                log.debug({title: 'result', details: result});

                var moyr = result.getValue({name: 'trandate', summary: 'GROUP'});
                var qty = result.getValue({name: 'quantity', summary: 'SUM'});
                var amt = result.getValue({name: 'amount', summary: 'SUM'});
                var strAmt = format.format({ value: amt, type: format.Type.CURRENCY });
                var cost = result.getValue({name: 'costestimate', summary: 'SUM'});
                var strCost = format.format({ value: cost, type: format.Type.CURRENCY });