I already have S2 Member installed and set up. Just decided to upgrade to S2 Pro but the zip file (s2member-pro.zip) is not installing.
I'm getting the following error from Wordpress on the add new plugin screen:
Unpacking the package…
Installing the plugin…
The package could not be installed. No valid plugins were found.
Plugin install failed.
Return to Plugins page
Somebody please help!
Thanks.