Hi Andreas Were you able to add QgsProject.instance() as a new third argument to your calls to QgsCoordinateTransform(). That got rid of the warnings for me. Tom ----- Buy Pie Spy: Adventures in British pastry 2010-11 on Amazon -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-Developer-f4099106.html