Image manipulation not working on localhost

[eluser]dsheetz[/eluser]
That's what I'm doing. I don't understand why no errors are being reported, when clearly no images are being produced. Just to make sure, here's the code I'm using:

---

$filename = "photo1.jpg";

$config['image_library'] = 'gd2';
$config['source_image'] = PHOTOS_DIR . $filename;
$config['create_thumb'] = TRUE;
$config['maintain_ratio'] = TRUE;
$config['width'] = 75;
$config['height'] = 50;

$this->load->library('image_lib', $config);

if (!$this->image_lib->resize())
{
echo $this->image_lib->display_errors();
}

---

Has anyone even gotten the error reporting working for this library?