Failure when overwriting theme_form_element

This doesn't seem like it should fail, but it does.

Using Drupal 4.6.3 on PHP 4.3.9 PHPTemplate 1.24.2.4

Added file to themes dir: template.php

<?php
function phptemplate_form_element($title, $value, $description = NULL, $id = NULL, $required = FALSE, $error = FALSE) {
  // Pass to phptemplate, including translating the parameters to an associative array. The element names are the names that the variables
  // will be assigned within your template.
  return _phptemplate_callback('form_element', array('title' => $title, 'value' => $value, 'description' => $description, 'id' => $id, 'required' => $required, 'error' => $error));
	}
?>

Added form_elememt.tpl.php to themes directory:

<?php 

	$output ="";
  $output  = "<div class=\"form-item\">\n";

  $required = $required ? '<span class="form-required">*</span>' : '';

	  if ($title) {
  			  if ($id) {
      				$output .= "<div class=\"label\"><label for=\"$id\">$title:</label>$required</div>\n";
					    }
    			else {
      				$output .= "<div class=\"label\"><label>$title:</label>$required</div>\n";
					    }
				  }

  $output .= "<div class=\"value\">$value</div>\n";

			  if ($description) {
				    $output .= "<div class=\"description\">$description</div>\n";
  				}

  $output .= "</div>\n";

	print $output;
		
?>		

Works just great for form display (which was my intent).

But it breaks the site when submitting any form. Now, this is possibly not a PHPTemplate bug, but when I insert the following:

<?php
/**
 * Create an form_element function, and redirect through the template api
**/

print "hello";

function phptemplate_form_element($title, $value, $description = NULL, $id = NULL, $required = FALSE, $error = FALSE) {
  // Pass to phptemplate, including translating the parameters to an associative array. The element names are the names that the variables
  // will be assigned within your template.
  return _phptemplate_callback('form_element', array('title' => $title, 'value' => $value, 'description' => $description, 'id' => $id, 'required' => $required, 'error' => $error));
	}

?> 

And then submit a form, I get "hello" and then a page crash (blank white PHP blankness).

Oddly, the form does submit and process correctly AFAIK. It just looks like the redirect function gets broken. If I remove the template.php file, this problem goes away.

Maybe I'm dropping a variable somewhere.