When starting kalgebra on OSX and clicking “3D Graph” for the 1st time, this error is shown on the console: --- $ /opt/kde/install/darwin/mavericks/clang/kf5-qt5/kde/kdeedu/kalgebra/inst/Applications/KF5/kalgebra.app/Contents/MacOS/kalgebra 2014-09-05 08:16:00.741 kalgebra[64603:507] invalid drawable --- Anything to worry about?