I have wordpress 3.8 and multi-site enabled. I have

I have wordpress 3.8 and multi-site enabled. I have installed the domain mapping plugin placed the sunrise.php in to the /wp-content folder and placed the relevant code in wp-config.php file.Unfortunately I am getting this error "You use old version of /home/*****/public_html/wp-content/sunrise.php file. Please, replace that file with new version which is located by following path: /home/*****/public_html/wp-content/plugins/domain-mapping/sunrise.php."

Completely lost as I have active membership, So I assume the plugin is the latest