Does the KDE System Settings applet work for anyone else in Knoppix 7.4.2?

I click Start - Preferences - KDE System Settings, the DVD whirrs, the DVD stops whirring, and nothing happens.
The app never comes up. 100% reproducible.
I booted to Knoppix CD test and it didn't report any problems.

Is there a Knoppix errata page? Around 10 years ago there was, but I couldn't find one now. It's hard to imagine that I'm the only one with this problem.