Hi Dirk, I should have stated the difference For ./talker error message was terminate called after throwing an instance of 'Poco::LibraryLoadException' what(): Cannot load library I did install Poco libpoco-dev is already the newest version (1.3.6p1-5.1build1). libpocofoundation9v5 is already the newest version (1.3.6p1-5.1build1). libpocofoundation9v5-dbg is already the newest version (1.3.6p1-5.1build1). I didn't not install # dependencies for testing and # dependencies for fastrtps For ./talker__rmw-connext-cpp as shown above Thanks for the pointer on test_results. These are the results: Summary: 9962 tests, 9 errors, 85 failures, 24 skipped Here are the list of errors build/demo_nodes_cpp/test_results/demo_nodes_cpp/test_tutorial_add_two_ints_server_add_two_ints_client__rmw_connext_cpp.xunit.xml: 1 tests, 0 skipped, 1 errors, 0 failures build/demo_nodes_cpp/test_results/demo_nodes_cpp/test_tutorial_add_two_ints_server_add_two_ints_client_async__rmw_connext_cpp.xunit.xml: 1 tests, 0 skipped, 1 errors, 0 failures build/demo_nodes_cpp/test_results/demo_nodes_cpp/test_tutorial_list_parameters__rmw_connext_cpp.xunit.xml: 1 tests, 0 skipped, 1 errors, 0 failures build/demo_nodes_cpp/test_results/demo_nodes_cpp/test_tutorial_list_parameters_async__rmw_connext_cpp.xunit.xml: 1 tests, 0 skipped, 1 errors, 0 failures build/demo_nodes_cpp/test_results/demo_nodes_cpp/test_tutorial_parameter_events__rmw_connext_cpp.xunit.xml: 1 tests, 0 skipped, 1 errors, 0 failures build/demo_nodes_cpp/test_results/demo_nodes_cpp/test_tutorial_parameter_events_async__rmw_connext_cpp.xunit.xml: 1 tests, 0 skipped, 1 errors, 0 failures build/demo_nodes_cpp/test_results/demo_nodes_cpp/test_tutorial_set_and_get_parameters__rmw_connext_cpp.xunit.xml: 1 tests, 0 skipped, 1 errors, 0 failures build/demo_nodes_cpp/test_results/demo_nodes_cpp/test_tutorial_set_and_get_parameters_async__rmw_connext_cpp.xunit.xml: 1 tests, 0 skipped, 1 errors, 0 failures build/demo_nodes_cpp/test_results/demo_nodes_cpp/test_tutorial_talker_listener__rmw_connext_cpp.xunit.xml: 1 tests, 0 skipped, 1 errors, 0 failures Most of the failures were related to the build/intra_process_demo/test_results/intra_process_demo/test_demo_cyclic_pipeline__rmw_connext_cpp.xunit.xml: 1 tests, 0 skipped, 0 errors, 1 failures build/osrf_pycommon/test_results/osrf_pycommon/nosetests.xunit.xml: 32 tests, 0 skipped, 0 errors, 1 failures build/pendulum_control/test_results/pendulum_control/test_demo_pendulum_teleop__rmw_connext_cpp.xunit.xml: 1 tests, 0 skipped, 0 errors, 1 failures build/test_communication/test_results/test_communication/test_publisher_subscriber__BoundedArrayNested__rclcpp__rclpy__rmw_connext_cpp__rmw_fastrtps_cpp.xunit.xml: 1 tests, 0 skipped, 0 errors, 1 failures To (Most of the failure cases are here) build/test_communication/test_results/test_communication/test_publisher_subscriber__StaticArrayPrimitives__rclpy__rmw_fastrtps_cpp__rmw_connext_cpp.xunit.xml: 1 tests, 0 skipped, 0 errors, 1 failures build/test_communication/test_results/test_communication/test_requester_replier__Primitives__rclcpp__rclpy__rmw_fastrtps_cpp.xunit.xml: 1 tests, 0 skipped, 0 errors, 1 failures build/test_communication/test_results/test_communication/test_requester_replier__Primitives__rclpy__rmw_fastrtps_cpp.xunit.xml: 1 tests, 0 skipped, 0 errors, 1 failures Thanks Vince --- [Visit Topic](https://discourse.ros.org/t/talker-example-issue-with-beta-1/992/7) 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: