What's wrong with this code?

[CarCdr]

If there are no rows retrieved, you will not see the error. Right after you set "$endtemplate" to the error message you set it to the empty string in the line:

$endtemplate = '';

Also, I would do the check for an empty $_REQUEST['do'] so that it is set before including global.php. This will allow it to pre-cache the $actiontemplates.

Finally, as Colin pointed out, I would fix your <TR>/<TD> tags before debugging much further.