Multi Domain Plugin is not installable

I do not see "Install" option for multi domain plugin. So I have downloaded and installed by uploading it. I am getting the following error message.

Installing Plugin from uploaded file: 153188_multi-domains-1.2.1(1).zip

Unpacking the package…

Installing the plugin…

The package could not be installed. No valid plugins were found.

Plugin install failed.

    Tom Eagles


    Did you actually read the installation instructions one the usage tab of the plugin??? Just in case you didn't here you are i copy and pasted them for you. Its always a good idea to read hw to install something first before saying its broken and won't install.



    Please Note: Multi-Domains is for sub domain installations only and will not work well for subdirectory installations.

    To Install:

    1. Download the plugin file

    2. Unzip the file into a folder on your hard drive

    3. Upload multi-domain.php and the multi-domains-files directory to the /wp-content/mu-plugins folder on your site (if you do not have this directory you will need to create it.)

    4. Upload sunrise.php to the /wp-content folder on your site – If you are using the domain mapping plugin, rename dm_sunrise.php to sunrise.php and upload it to the /wp-content folder on your site

    5. Edit wp-config.php (normally located in the root of your install) and the following: define( ‘SUNRISE’, ‘on’ ); (Please ensure that you type this and not just copy and paste – Take care with the back-ticks)