please help
Downloading update from http://api.muffingroup.com/plugins/download.php?code=16d4fdf9-0bef-49ea-b789-5a66bb511a62&plugin=revslider…
Unpacking the update…
Installing the latest version…
The package could not be installed. The package contains no files.
Plugin update failed.
Comments
this message could mean that your license key is used on more than one domain.
Please use this tool to manage your license keys:
http://forum.muffingroup.com/betheme/discussion/36219/cannot-register-deregister-your-license-key-use-this-tool#latest
thanks