I stumbled over the same problem. plasmoidviewer gives a bit more information:
findServiceByDesktopPath: not found Traceback (most recent call last): File "/usr/share/kde4/apps/plasma_scriptengine_python/pyappletscript.py", line 19, in <module> from PyQt4.QtCore import * ImportError: /usr/lib/pymodules/python2.5/PyQt4/QtCore.so: undefined symbol: PyProperty_Type -- To UNSUBSCRIBE, email to debian-qt-kde-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org