Hi Arturo, This error may be because you've not closed any label in the world file regards, Aitor -- View this message in context: http://jderobot-developer-list.2315034.n4.nabble.com/JdeRobot-Error-with-Gazebo-tp4643212p4643214.html Sent from the Jderobot Developer List mailing list archive at Nabble.com.