funny coloured thumbnails in 2k adv server

[jpmoriarty]

I'musing win 2k adv server with ie6 - although my full size images look fine and dandy, the php generated thumbnails are all funny colours (see link). It used to be fine with my win xp pro installation - anyone any ideas as to what could be wrong?

<?

//      if (!$max_width)
         $max_width = 100;
//      if (!$max_height)
        $max_height = 100;

  $file = $directory."/".$file;

  $size = GetImageSize($file);
  $width = $size[0];
  $height = $size[1];

  $x_ratio = $max_width / $width;
  $y_ratio = $max_height / $height;

  if ( ($width <= $max_width) && ($height <= $max_height) ) {
    $tn_width = $width;
    $tn_height = $height;
  }
  else if (($x_ratio * $height) < $max_height) {
    $tn_height = ceil($x_ratio * $height);
    $tn_width = $max_width;
  }
  else {
    $tn_width = ceil($y_ratio * $width);
    $tn_height = $max_height;
  }

  $src = ImageCreateFromJpeg($file);
  $dst = ImageCreate($tn_width,$tn_height);
  ImageCopyResized($dst, $src, 0, 0, 0, 0,
      $tn_width,$tn_height,$width,$height);
  header("Content-type: image/jpeg");
  ImageJpeg ($dst, '', 100);
  ImageDestroy($src);
  ImageDestroy($dst);

?>

[jpmoriarty]

okay have it sorted - it turned out it was because i was using the gd2 library, not the gd one. Anyone know what the difference (apart from funny coloured thumbnails) is?