Fatal error: Class 'Url' not found

Hi all,

I get this error when I try to access a successfully installed Opencart latest version

Fatal error: Class 'Url' not found in /home/acheterl/public_html/balconygardener.ch/index.php on line 71

Same when trying to access the admin

Fatal error: Class 'Url' not found in /home/acheterl/public_html/balconygardener.ch/admin/index.php on line 50

For your info, line 71 of the 1st index file is

$url = new Url($config->get('config_url'), $config->get('config_ssl'));

And in the index file of the admin folder, line 50 is

$url = new Url(HTTP_SERVER, HTTPS_SERVER);

Any hint?

Thanks in advance

No answer after 3 days

As I had been playing around pretty much with php.ini, php5.ini and .htaccess, I reinstalled everything and only did as follows:

- Renamed .htaccess.txt into .htaccess
- Uncommented php_flag magic_quotes_gpc Off in .htaccess

Everything worked fine

I am facing an same error what can i do will anyone tell me
in admin it show an error Fatal error: Class 'Url' not found in /home/abhiyan/public_html/bhayajimercantile.biz/admin/index.php on line 56

and in home page it gives an error Fatal error: Class 'Url' not found in /home/abhiyan/public_html/bhayajimercantile.biz/index.php on line 77.

please tell me how to resolve it

I have a big problem
Opencart VERSION 1.5.5.1

Fatal error: Class 'Url' not found
in root website timetech-eg.com

Fatal error: Class 'Url' not found in /mounted-storage/home125/sub027/sc86690-SPJK/timetech-eg.com/index.php on line 77

in index php
$url = new Url($config->get('config_url'), $config->get('config_secure') ? $config->get('config_ssl') : $config->get('config_url'));
$registry->set('url', $url);
--
in admin
http://www.timetech-eg.com/admin/
Fatal error: Class 'Url' not found in /mounted-storage/home125/sub027/sc86690-SPJK/timetech-eg.com/admin/index.php on line 56
in index php
$url = new Url(HTTP_SERVER, $config->get('config_secure') ? HTTPS_SERVER : HTTP_SERVER);
$registry->set('url', $url);

Please help me