Screen saver problem


Ye Olde Bowler
May or not be of interest however...
Three days ago my screen saver (screensaver-glass-blue) stopped working and I just had a black screen.
I removed screensaver (Basic screensaver framework) and the following was displayed:


However screensaver did disappear from my installed packages.
Restarted and the vanilla screensaver worked okay.
Reinstalled screensaver and screensaver-glass-blue, restarted and all okay.