Hi, new user here, I've been trying to install KDE Neon on a completely new system, I had the error as described here http://askubuntu.com/questions/30773/hard-disk-error. Thinking it was down to a corrupted download I've been waiting for the download link to re enable herehttps://neon.kde.org/download. I've now downloaded the current ISO but now when I click the "install this system permanently to your hard disk" button the installation window pops up empty then disappears.

Any help gladly appreciated.

Just a shot in the dark, but try booting the live system with the "nomodeset" option to see if the installation window glitch goes away.