I purchased the plugin and uploaded it and it says..."The package could not be installed. No valid plugins were found. Plugin install failed." I have the main analytics plugin installed and has been for a few months now.
Are you able to manually upload it (for example through FTP), or is just through the WordPress interface available to you?
Ok I've verified domain but the plugin still will not install. Why is this?? I've done this so many times before with various plugins and have never had a problem!
Please extract your plugin and find out which one is current folder of files, then zip that folder and it will work. If you can not then please contact me.