Resizing image does not work

I fixed it through trial-and error. I'm posting this for the benefit of someone else.

My non-working code:

PHP Code:

        $config['image_library'] = 'gd2';
        $config['source_image'] = './uploads/' . $pImage;
        $config['new_image'] = './uploads/000.png';
        $config['maintain_ratio'] = TRUE;
        $config['width']         = $pWidth;
        $config['height']       = $pHeight;

        $this->CI->load->library('image_lib');
        $this->CI->image_lib->initialize($config);
        $this->CI->image_lib->clear();

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

        } 


To make it work, I just removed the line:

PHP Code:

$this->CI->image_lib->clear(); 


I found the use of the clear method in another forum but simply removing it worked.