[quote="robotdude, post:5, topic:4943"] But every time we call the service we received an Error. [/quote] This is too vague, and sounds more like a ROS Answers question. Not to steal anyone's opportunity to earn some cash, but this could be a classic ROS-on-multiple-network-hosts problem. Make sure to either: 1. have a working DNS entry for all involved hosts, or 1. set `ROS_IP` on all involved hosts --- [Visit Topic](https://discourse.ros.org/t/looking-to-pay-someone-to-help-out-with-ros-and-rviz-immediately/4943/6) or reply to this email to respond. If you do not want to receive messages from ros-users please use the unsubscribe link below. If you use the one above, you will stop all of ros-users from receiving updates. ______________________________________________________________________________ ros-users mailing list ros-users@lists.ros.org http://lists.ros.org/mailman/listinfo/ros-users Unsubscribe: