Tile Plus has received a significant update to take full advantage of all the newer features built into Connections.
If you are upgrading from an older version of Tile Plus you must go to the Connections : Templates admin page and delete the older version before installing the new version.
To install the new version, please install it as you would any plugin, please do not use the template installer found on the Connections : Templates admin page. The template installer will only remain in place until all templates have been updated to use the new templating system. After which it will be removed completely.
After you install Tile Plus, as a plugin, activate it as a plugin.
Finally, Tile Plus will show up on the Connections : Templates admin page and be available for use.