Javascript ADO function fails with out logging any errors

Question

I have a large JavaScript function that is having problems. I added a try/catch block hoping it would report errors. However, no errors are reported. The function returns and empty string which means it did not work. It should return the key value of the inserted record. I have attempted to check for errors in the connection object also. An ODBC connection is being used. Below is the code. I understand the script will continue to run even if an ADO error occurs. I am open to ideas.

function addSelectedFile_Aspera(TransmittalKey, FileName, OriginalFilePath, DestinationPath, TransferType, UserKey) {
    try {
        TransmittalKey = unescape(TransmittalKey);
        FileName = unescape(FileName);
        OriginalFilePath = unescape(OriginalFilePath);
        DestinationPath = unescape(DestinationPath);
        TransferType = unescape(TransferType);
        UserKey = unescape(UserKey);

        var DataConn = Server.CreateObject("ADODB.Connection");
        DataConn.ConnectionTimeout = Application("DataConn_ConnectionTimeout");
        DataConn.CommandTimeout = Application("DataConn_CommandTimeout");
        DataConn.Open(Application("DataConn_ConnectionString"), Application("DataConn_RuntimeUserName"), Application("DataConn_RuntimePassword"));
        var RS = Server.CreateObject("ADODB.RecordSet");

        var strSQL = "select OriginalFilePath from bms_FileTransfers where TransmittalKey=" + TransmittalKey;
        strSQL = strSQL + " and OriginalFilePath='" + OriginalFilePath + "' and DateTransferred is null";

        RS.Open(strSQL, DataConn);
        if (!RS.EOF) {
            RS.Close();
            RS = null;
            DataConn.Close();
            DataConn = null;
            return ("Already exists");
        }
        RS.Close();

        var DateTransferred = TodaysDate();
        var TimeTransferred = CurrentTime();

        var cmdTemp = Server.CreateObject("ADODB.Command");
        cmdTemp.ActiveConnection = DataConn;

        var AddedFileKeyValue = generatePrimaryKey("bms_FileTransfers", "FileTransferKey");

        var str = "";
        str = "insert into bms_FileTransfers";
        str = str + " (FileTransferKey,FileName,OriginalFilePath,SavedFilePath";
        str = str + ",DateTransferred,TimeTransferred,TransmittalKey,TransferType)";
        str = str + " values(";
        str = str + AddedFileKeyValue;
        str = str + "," + formatSQLData(FileName, "C");
        str = str + "," + formatSQLData(OriginalFilePath, "C");
        str = str + "," + formatSQLData(DestinationPath, "C");
        str = str + "," + formatSQLData(DateTransferred, "C");
        str = str + "," + formatSQLData(TimeTransferred, "C");
        str = str + "," + TransmittalKey;
        str = str + ",'" + TransferType + "')";

        cmdTemp.CommandText = str;
        cmdTemp.CommandType = 1;
        cmdTemp.Execute();

        // add to audit trail

        var UserName = "";
        var FirstName = "";
        var LastName = "";
        var Middle = "";

        var RS = Server.CreateObject("ADODB.RecordSet");

        strSQL = "select UserName,FirstName,Middle,LastName from bms_SysUsers where UserKey=" + UserKey;

        RS.Open(strSQL, DataConn);
        if (!RS.EOF) {
            UserName = ConvertNullToBlank(RS(0));
            FirstName = ConvertNullToBlank(RS(1));
            Middle = ConvertNullToBlank(RS(2));
            LastName = ConvertNullToBlank(RS(3));
        }
        RS.Close();

        var UserFullName = FirstName + " " + Middle + " " + LastName;
        if (Middle == "") UserFullName = FirstName + " " + LastName;

        var ModuleName = "DataTransmittals";
        var ReasonForChange = "File Uploaded to " + DestinationPath;
        var AuditTrailKey;

        strSQL = "select max(AuditTrailKey) from bms_DataAuditTrail";

        RS.Open(strSQL, DataConn);
        if (!RS.EOF) {
            AuditTrailKey = parseFloat(ConvertNullToZero(RS(0))) + 1;
        }
        RS.Close();

        strSQL = "insert into bms_DataAuditTrail (AuditTrailKey,ModuleName,RecordKeyValue,ColumnName";
        strSQL = strSQL + ",ChangeDate,ChangeTime,ReasonForChange,UserKey,UserID,UserFullName)";
        strSQL = strSQL + " values(";

        strSQL = strSQL + AuditTrailKey;
        strSQL = strSQL + "," + formatSQLData(ModuleName, "C");
        strSQL = strSQL + "," + TransmittalKey;
        strSQL = strSQL + "," + formatSQLData("File Upload", "C");
        strSQL = strSQL + "," + formatSQLData(DateTransferred, "C");
        strSQL = strSQL + "," + formatSQLData(TimeTransferred, "C");
        strSQL = strSQL + "," + formatSQLData(ReasonForChange, "C");
        strSQL = strSQL + "," + UserKey;
        strSQL = strSQL + "," + formatSQLData(UserName, "C");
        strSQL = strSQL + "," + formatSQLData(UserFullName, "C");
        strSQL = strSQL + ")";

        cmdTemp.CommandText = strSQL;
        cmdTemp.CommandType = 1;
        cmdTemp.Execute;

        RS = null;
        cmdTemp = null;
        var myErrorText = "";
        var errLoop = Server.CreateObject("ADODB.Error");
        if (DataConn.Errors.Count > 0) {
            for (var i = 1; i < DataConn.Errors.Count; i++) {
                errLoop = DataConn.Errors(i);
                myErrorText += errLoop.Number;
                myErrorText += errLoop.Description;
                myErrorText += errLoop.Source;
                myErrorText += errLoop.SQLState;
                myErrorText += errLoop.NativeError;
            }
        }
        if (myErrorText != "") {
            var cmdTemp3 = Server.CreateObject("ADODB.Command");
            var DataConn3 = Server.CreateObject("ADODB.Connection");
            DataConn3.ConnectionTimeout = Application("DataConn_ConnectionTimeout");
            DataConn3.CommandTimeout = Application("DataConn_CommandTimeout");
            DataConn3.Open(Application("DataConn_ConnectionString"), Application("DataConn_RuntimeUserName"), Application("DataConn_RuntimePassword"));
            cmdTemp3.ActiveConnection = DataConn3;
            var str3 = "";
            str3 = "insert into bms_ErrorLog";
            str3 = str3 + " ([EntryDate], ErrorMessage, CodeClassMethodName)";
            str3 = str3 + " values(getdate()";
            str3 = str3 + ", '" + TransmittalKey + "| " + myErrorText + "'";
            str3 = str3 + ", 'DTFSvr.asp/addSelectedFile_Aspera')";

            cmdTemp3.CommandText = str3;
            cmdTemp3.CommandType = 1;
            cmdTemp3.Execute();
            cmdTemp3 = null;
            DataConn3.Close();
            DataConn3 = null;
        }
        DataConn.Close();

        DataConn = null;

        return (AddedFileKeyValue);
    }
    catch (err) {
        var cmdTemp2 = Server.CreateObject("ADODB.Command");
        var DataConn2 = Server.CreateObject("ADODB.Connection");
        DataConn2.ConnectionTimeout = Application("DataConn_ConnectionTimeout");
        DataConn2.CommandTimeout = Application("DataConn_CommandTimeout");
        DataConn2.Open(Application("DataConn_ConnectionString"), Application("DataConn_RuntimeUserName"), Application("DataConn_RuntimePassword"));
        cmdTemp2.ActiveConnection = DataConn2;
        var str2 = "";
        str2 = "insert into bms_ErrorLog";
        str2 = str2 + " ([EntryDate], ErrorMessage, CodeClassMethodName)";
        str2 = str2 + " values(getdate()";
        str2 = str2 + ", '" + TransmittalKey + "| " + err.number + "| " + err.description + "| " + err.message + "'";
        str2 = str2 + ", 'DTFSvr.asp/addSelectedFile_Aspera')";

        cmdTemp2.CommandText = str2;
        cmdTemp2.CommandType = 1;
        cmdTemp2.Execute();

        cmdTemp2 = null;
        DataConn2.Close();
        DataConn2 = null;
        return "";
    }
}