Updated from 1.7.2 to 2.1, now every page is 404

Code:
<IfModule mod_rewrite.c>

  RewriteEngine On

  RewriteBase /



#Removes access to the system folder by users.

#Additionally this will allow you to create a System.php controller,

#previously this would not have been possible.

#'system' can be replaced if you have renamed your system folder.

  RewriteCond %{REQUEST_URI} ^system.*

  RewriteRule ^(.*)$ /rootpath/www/index.php/$1 [L]



#Checks to see if the user is attempting to access a valid file,

#such as an image or css document, if this isn't true it sends the

#request to index.php

  RewriteCond %{REQUEST_FILENAME} !-f

#RewriteCond %{REQUEST_FILENAME} !-d

  RewriteRule ^(.*)$ /rootpath/www/index.php/$1 [L]

</IfModule>



<IfModule !mod_rewrite.c>

# If we don't have mod_rewrite installed, all 404's

# can be sent to index.php, and everything works as normal.

# Submitted by: ElliotHaughin



  ErrorDocument 404 /index.php

</IfModule>