when using a repeat region, the recordset pointer will be left on the last record after the repeat region finishes the first time, you will need to add code to the email file to reset the recordset pointer after the repeat region finishes.
In the email file, add the following code just before the repeat region:
<?php
mysql_data_seek($rsRecordset, 0);
$row_rsRecordset = mysql_fetch_assoc($rsRecordset);
?>
where rsRecordset is the name of the recordset.