Why? ThingworxInfoTableAdapter cannot be cast to com.thingworx.types.InfoTable

Here is quick outline of my service. When I run this inside of Thinkworx as a service, I get 4 data rows. Perfect. So now I want to return json and below are my attempts (logged). Any ideas on why this error occurs? I have tried every json-converter function I can find.

var DetailedLogging = true;

logger.warn("here is my input value....." + lastDTSCheck);

try {

    var devices = Things['ATS.Org'].ListDevices();

    var device;

    var result = null;

    result = Resources["InfoTableFunctions"].CreateInfoTableFromDataShape({

       infoTableName : "InfoTable",

        dataShapeName : "OrgDateCheck"

    });

    var cnt = 0;

    for each(device in devices.rows) {

        device = Things[device.EntityName];

        if (device.GetLastModifiedDate() > lastDTSCheck) {

            cnt = cnt + 1;

            logger.warn("My counter is now at: " + cnt);

           if (result == null) {

               result = Things[device.name].GetPropertyValues();

               result.name = device.name;

           } else {

               result.AddRow(Things[device.name].GetPropertyValues().rows[0]);

               result.rows[result.getRowCount() - 1].name = device.name;

           }

        }

    }

    //logger.warn("debugging the output? ..... " + result);

    //logger.warn("debugging the output 2 as json string" + result.ToJSON() );

    //logger.warn("debugging the output 3 as stringify: " + JSON.stringify(result) );

    //logger.warn("debugging the output 4 as toString: " + result.toString() );

    //result = JSON.stringify(result);

    result.ToJSON();

} catch (err) {

  logger.warn(me.name + ".MEB() [err]: " + err + ", " + err.lineNumber);

}