Telepathy contact list plasma widget doesn't work - kubuntu 13.10

[marwell]

After upgrading to 13.10 one of my problems is, that telepathy's contact 
list plasma widget doesn't work anymore. Instead of showing the contact list 
it shows a message
file://usr/share/kde4/apps/plasma/plasmoids/org.kde.ktp-
contactlist/contents/ui/main.qml:28:5: Der Typ ContactList ist nicht 
verfuegbar (English ~ the type contactlist is not available)
file://usr/share/kde4/apps/plasma/plasmoids/org.kde.ktp-
contactlist/contents/ui/ContactList.qml:21:1: Modul "org.kde.telepathy" ist 
nicht installiert (English ~ module "org.kde.telepathy" is not installed)
Of course telepathy is installed.
Any ideas? Anybody with the same problem?
Thank You!