Update 1.0 -> 1.1
Update version 1.0 or version 1.1 to 1.1.1
Upload folder "addons" to your install directory.
Edit pixelpost.php file (admin/pixelpost.php)
Upload ALL .php files.
REMOVE pixelpost_cfg from your webserver.
This is a mandatory install, very sorry for this. Huge, obvious mistake spotted.
This info also availabe in the readme