Artifact of conversion to KDE 3.5

I've encountered an odd bug, annoying but not critical, in the conversion from KDE 3.4.2 to KDE 3.5. If I use the KDE Control Center directly and go to Appearance and Themes / Background, I get the correct screen to set the desktop background. But if I use the taskbar icon for KCC (an applet, technically), which provides more direct access to Appearance and Themes, I just get a blank window when I then go to Background. Would anyone else care to take a minute and try this? Is it just me or is there a more general problem here? Paul