[SOLVED]Image resize - not working without thumb

[eluser]karloff[/eluser]
I have been battling at getting the resize function working. At the moment, the resize does not work unless create_thumb is set to true... can anyone spot anything I'm doing wrong??

Code:

$config['image_library'] = 'gd2';
            $config['create_thumb'] = FALSE;
            $config['maintain_ratio'] = TRUE;
            $config['overwrite']    = TRUE;
            $config['quality'] = 100;
            $config['width'] = 478;
            
            $config['master_dim'] = 'width';
            
            $config['source_image'] = './images/projects/'.$_FILES['image']['name'];
            

            $this->load->library('image_lib', $config);
            $this->image_lib->initialize($config);
            if ( ! $this->image_lib->resize() )
            {
                $data['error'] = $this->image_lib->display_errors();
                $this->template->load('admin_template', '/backend/add_work', $data);
            }