[Plugin: OpenID] Solution for conflict with other plugins…

The issue is the call to restore_include_path on line 35 of open_id.php. By doing something like this:

$old_include_path = get_include_path();
set_include_path( $openid_include_path . PATH_SEPARATOR . $old_include_path );
require_once 'common.php';
require_once 'consumer.php';
require_once 'admin_panels.php';
require_once 'comments.php';
require_once 'login.php';
require_once 'server.php';
require_once 'store.php';
set_include_path( $old_include_path);

instead, you can avoid conflicts with any plugins that might depend on their own changes to the include path. Please hit me back if I can be of any help.

Cheers,

James

http://wordpress.org/extend/plugins/openid/