Can't Enable Memcache Admin Module

Hello,

Whenever I try to enable the memcache admin module, I get this error:

Memcache admin requires that the "cache_inc" $conf variable be set to include either memcache.inc or memcache.db.inc. Please read the installation instructions. (Currently using Memcache admin Memcache not included)

Here's my $conf section of my settings.php file:

$conf['cache_inc'] = './sites/all/modules/memcache/memcache.inc';
'memcache_servers' => array('localhost:11211' => 'default',
'localhost:11212' => 'default',
'localhost:11213' => 'default',
'localhost:11214' => 'pages',
'localhost:11215' => 'filer',
'localhost:11216' => 'menu'),
'memcache_bins' => array('cache' => 'default',
'cache_filter' => 'filer',
'cache_menu' => 'menu');

Any help would be greatly appreciated!