Clean URLs don’t work after upgrade

I recently upgraded my CodeIgniter app from v1.7.2 to 2.0.2.

I use mod_rewrite to produce clean URLs without index.php e.g. example.com/controller/action. It is working on my local dev server but when I updated my production app all requests to example.com/controller/action result in displaying main page (i.e. index.php).

When I access address like that: example.com/index.php/controller/action it works.

Mod_rewrite is on as it was working fine with previous code version. With 1.7.2 I used $config['uri_protocol'] = "AUTO" but now I swit开发者_Python百科ched to "PATH_INFO" because auto resulted in 404.

Because it is working on dev I’m wondering if I missed any deployment step. Any ideas?

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There are .htaccess rules I'm using with CI 2:

Options +FollowSymLinks
RewriteEngine On
RewriteBase /

<IfModule mod_rewrite.c>
    #paths that you don't want to rewrite
    RewriteCond $1 !^(index\.php|assets|session|robots\.txt) 
    RewriteRule ^(.*)$ /index.php/$1 [L]
</IfModule>

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I think I had some similar problem and I believe it got resolved by changing permission on my root folder to 777... but that was on XAMPP