Kscreensaver does not allow access to the advanced options of the 
xscreensavers.  For example, the Carousel screen saver displays a list of random pictures.  To select the directory from which pictures are chosen, one must specify the path under the advanced options.  These options cannot be reached using the
"Setup" button in the screensaver portion of the Control Center.

When starting "xscreensaver-demo" from the command line I can access the 
advanced settings and specify the path.  Once that is done the screen savers that require a path for pictures function correctly.

Reproducible: Always