Hi Martin, thanks - actually I want to move to Grass for 3D data, I just posted that I am qgis user to show that I am inexperienced with grass cheers, Dimitris -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Grass7-GUI-does-not-start-tp5257181p5258484.html Sent from the Grass - Users mailing list archive at Nabble.com.