libexpat.so.0: cannot open shared object file

I have been using Electric sheep under Xscreensaver on a Mandriva system (KDE) for years now. I recently upgraded to 2008.1 and discovered that electric sheep won't run under Compiz-fusion.

When run from a terminal or try to preview in Xscreensaver, I get:

$ electricsheep
electricsheep: error while loading shared libraries: libexpat.so.0: cannot open shared object file: No such file or directory

This happens whether run as root or a regular user.

Is some dependency not installed here?

Help?

Mark