Hi all, I'm encountering an error when I try to rosrun turtlesim turtlesim_node ... [ERROR] 1269276678.662877000: [registerPublisher] Failed to contact master at [localhost:11311]. Retrying... It stalls there. When I press Ctrl-C, this appears: ^C[ INFO] 1269277115.920872000: Starting turtlesim with node name /turtlesim [ INFO] 1269277115.921579000: Spawning turtle [turtle1] at x=[5.555555], y=[5.555555], theta=[0.000000] No simulation window. Has anyone had this bug? How do you fix it? Best, EK