404 page after upgrade

Try changing the Prtocol to one of the other.

PHP Code:

$config['uri_protocol'] = 'PATH_INFO'; 


I think the problem is around routes file. Here is a strange thing.
The routes.php starts with:

Code:

$route['default_controller'] = "local/city";
$route['scaffolding_trigger'] = "";
$route['biz/[0-9a-zA-Z\-_]+']='biz/show';

more routes down here....

So some routes don't work unless they right under the Scaffolding_Trigger or all the way up

Code:

$route['default_controller'] = "local/city";
$route['scaffolding_trigger'] = "";
$route['biz/privacy']='biz/privacy';

$route['biz/[0-9a-zA-Z\-_]+']='biz/show';

Any reason this happening?