Running Rocs from command line gave the output; org.kde.rocs.graphtheory.general: "qrc:/libgraphtheory/qml/Scene.qml:25 module \"QtQml.StateMachine\" is not installed\n" After searching ahile and I installed qml-module-qtqml-statemachine manually. It must be in the dependency to work.
Reported as bug 396222. The bug tracker for Kubuntu is Launchpad. https://launchpad.net/ubuntu/+search?text=rocs