htaccess configuration - With CodeIgniter - A3M library

I downloaded a3m, it comes packaged with CI 1.7.2 but I went ahead and removed all of the files it needed to run and put them in my pre-existing installation. After going to the a3m controller on my site I received: Message: Undefined property: CI::$session

So I assume it’s because of htaccess looking for a3m files in an 开发者_C百科a3m folder, here’s the a3m htaccess:

RewriteEngine on 
RewriteRule ^$ /a3m/index.php [L] 
RewriteCond $1 !^(index\.php|css|img|js|scripts|system|uploads|robots\.txt|favicon\.ico) 
RewriteRule ^(.*)$ /a3m/index.php/$1 [L] 

And my already existing htaccess for mod rewrite is as follows:

<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteBase /beta/

    #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 ^(.*)$ /index.php?/$1 [L]

    #When your application folder isn't in the system folder
    #This snippet prevents user access to the application folder
    #Submitted by: Fabdrol
    #Rename 'application' to your applications folder name.
    RewriteCond %{REQUEST_URI} ^application.*
    RewriteRule ^(.*)$ /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 ^(.*)$ 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> 

As the commenting shows, I used it from a site a while back, so how can I combine the two I guess is what I’m trying to ask as I’m quite enthused about using a3m.

Thanks guys.

It doesn't look like you've loaded the session library.

Check in system\application\config\autoload.php if you have the library loaded: [42] $autoload['libraries'] = array('database', 'session');

You can do this from the controller: $this->load->library('session');

http://codeigniter.com/user_guide/libraries/sessions.html