{{popupHeader}} on launch unresponsive

When I launch lol it shows a popup over the launcher that I cannot close. It shows a X in the top right corner, betaFAQ link and a popupYESlabel, but when clicking these nothing happens and I cannot see behind it. The normal screen is shaded in the background. It's almost like it failed to load all the way and hung.

I have re-installed, tried launching from the shortcut and lol.launcher.exe to include admin.

Any ideas?