Hi,<br><br>I&#39;m trying to run the tutorial &quot;Writing Teleoperation Node for a Linux supported Joystick&quot; (<a href="http://www.ros.org/wiki/joy/Tutorials/WritingTeleopNode">http://www.ros.org/wiki/joy/Tutorials/WritingTeleopNode</a>) but, when I launch it, this errors occurs:<br>
<br>[ERROR] [1319554411.613621554]: Client [/teleop_nao] wants topic /joy to have datatype/md5sum [joy/Joy/e3ef016fcdf22397038b36036c66f7c8], but our version has [sensor_msgs/Joy/5a9ea5f83505693b71e785041e67a8bb]. Dropping connection.<br>
<br>Any ideas on how to fix the problem?<br><br>My computer is running Ubuntu 10.04 and I&#39;m using ROS electric.<br><br><br>