*** image.imagemagick.inc
--- image.imagemagick.inc.old
***************
*** 123,128 ****
--- 123,133 ----
   * Calls the convert executable with the specified filter.
   */
  function _image_imagemagick_convert($source, $dest, $args) {
+   $dest_orig = $dest;
+   if(isset($args['convertto'])){
+     $dest = $args['convertto'].':'.$dest;
+     unset($args['convertto']);
+   }
    $command = implode(' ', array(
      preg_replace("/[^A-Za-z0-9\!\.\-\+\_\/\040]/", '', implode(' ', $args)),
      escapeshellarg($source),
***************
*** 132,138 ****
    if (0 != _image_imagemagick_convert_exec($command, $output, $errors)) {
      return FALSE;
    }
!   return file_exists($dest);
  }
  
  function _image_imagemagick_convert_exec($command_args, &$output, &$errors) {
--- 137,143 ----
    if (0 != _image_imagemagick_convert_exec($command, $output, $errors)) {
      return FALSE;
    }
!   return file_exists($dest_orig);
  }
  
  function _image_imagemagick_convert_exec($command_args, &$output, &$errors) {