Mi da questi errori:

codice:
Warning: getimagesize: Unable to open '' for reading. in c:\Programmi\EasyPHP\includes\config.inc.php on line 43

Warning: Division by zero in c:\Programmi\EasyPHP\includes\config.inc.php on line 103

Warning: getimagesize: Unable to open '' for reading. in c:\Programmi\EasyPHP\includes\config.inc.php on line 43

Warning: Division by zero in c:\Programmi\EasyPHP\includes\config.inc.php on line 105

Warning: getimagesize: Unable to open '' for reading. in c:\Programmi\EasyPHP\includes\config.inc.php on line 43

Warning: getimagesize: Unable to open '' for reading. in c:\Programmi\EasyPHP\includes\config.inc.php on line 43

Warning: Division by zero in c:\Programmi\EasyPHP\includes\config.inc.php on line 103

Warning: getimagesize: Unable to open '' for reading. in c:\Programmi\EasyPHP\includes\config.inc.php on line 43

Warning: Division by zero in c:\Programmi\EasyPHP\includes\config.inc.php on line 105

Warning: getimagesize: Unable to open '' for reading. in c:\Programmi\EasyPHP\includes\config.inc.php on line 43

Warning: getimagesize: Unable to open '' for reading. in c:\Programmi\EasyPHP\includes\config.inc.php on line 43

Warning: getimagesize: Unable to open '' for reading. in c:\Programmi\EasyPHP\includes\config.inc.php on line 43
Linea 43:
Codice PHP:
        $size = GetImageSize( $this->source ); 
Linea 103:
Codice PHP:
        $w_ratio = $this->max_width  / $this->GetImageData('width'); 
Linea 105:
Codice PHP:
        $h_ratio = $this->max_height / $this->GetImageData('height'); 
cosa devo fare?