Hi,

1) first question: I have a fresh installation of ubuntu 16.04 and of ROS kinetic. I'm following these instructions to get the necessary packages:

http://wiki.ros.org/Robots/REEM-C/Tutorials/Installation/Simulation

At the stage where I need to check the dependencies with the following command:

rosdep install --from-paths src --ignore-src --rosdistro kinetic --skip-keys="opencv2 pal_laser_filters speed_limit_node sensor_to_cloud hokuyo_node libdw-dev gmock walking_utils rqt_current_limit_controller simple_grasping_action reemc_init_offset_controller walking_controller"

I get the error:

rosdep install --from-paths src --ignore-src --rosdistro kinetic --skip-keys="opencv2 pal_laser_filters speed_limit_node sensor_to_cloud hokuyo_node libdw-dev gmock walking_utils rqt_current_limit_controller simple_grasping_action reemc_init_offset_controller walking_controller"

When I build the workspace the following (obviously) occurs:

Failed     << pal_walking_msgs:cmake                               [ Exited with code 1 ]
Failed    <<< pal_walking_msgs                                     [ 1.3 seconds ]
Abandoned <<< reemc_moveit_config                                  [ Unrelated job failed ]
Abandoned <<< teleop_tools_msgs                                    [ Unrelated job failed ]
Abandoned <<< tf_lookup                                            [ Unrelated job failed ]
Abandoned <<< twist_mux_msgs                                       [ Unrelated job failed ]
Abandoned <<< combined_robot_hw                                    [ Unrelated job failed ]
Abandoned <<< controller_interface                                 [ Unrelated job failed ]
Abandoned <<< joint_limits_interface                               [ Unrelated job failed ]
Abandoned <<< pal_hardware_interfaces                              [ Unrelated job failed ]
Abandoned <<< transmission_interface                               [ Unrelated job failed ]
Abandoned <<< ros_control_monitor                                  [ Unrelated job failed ]
Abandoned <<< rqt_joint_trajectory_controller                      [ Unrelated job failed ]
Abandoned <<< gazebo_plugins                                       [ Unrelated job failed ]
Abandoned <<< gazebo_ros                                           [ Unrelated job failed ]
Abandoned <<< pal_web_msgs                                         [ Unrelated job failed ]
Abandoned <<< reemc_asr_tutorials                                  [ Unrelated job failed ]
Abandoned <<< reemc_tts_tutorials                                  [ Unrelated job failed ]
Abandoned <<< pal_carbon_collector                                 [ Unrelated job failed ]
Abandoned <<< pal_statistics                                       [ Unrelated job failed ]
Abandoned <<< actuator_state_controller                            [ Unrelated job failed ]
Abandoned <<< controller_manager                                   [ Unrelated job failed ]
Abandoned <<< controller_manager_tests                             [ Unrelated job failed ]
Abandoned <<< combined_robot_hw_tests                              [ Unrelated job failed ]
Abandoned <<< diff_drive_controller                                [ Unrelated job failed ]
Abandoned <<< force_torque_sensor_controller                       [ Unrelated job failed ]
Abandoned <<< forward_command_controller                           [ Unrelated job failed ]
Abandoned <<< effort_controllers                                   [ Unrelated job failed ]
Abandoned <<< four_wheel_steering_controller                       [ Unrelated job failed ]
Abandoned <<< gripper_action_controller                            [ Unrelated job failed ]
Abandoned <<< imu_sensor_controller                                [ Unrelated job failed ]
Abandoned <<< joint_state_controller                               [ Unrelated job failed ]
Abandoned <<< joint_torque_sensor_state_controller                 [ Unrelated job failed ]
Abandoned <<< joint_trajectory_controller                          [ Unrelated job failed ]
Abandoned <<< joy_teleop                                           [ Unrelated job failed ]
Abandoned <<< mode_state_controller                                [ Unrelated job failed ]
Abandoned <<< pal_gazebo_plugins                                   [ Unrelated job failed ]
Abandoned <<< dynamic_introspection                                [ Unrelated job failed ]
Abandoned <<< position_controllers                                 [ Unrelated job failed ]
Abandoned <<< play_motion                                          [ Unrelated job failed ]
Abandoned <<< realsense_gazebo_plugin                              [ Unrelated job failed ]
Abandoned <<< reemc_basic_tutorials                                [ Unrelated job failed ]
Abandoned <<< reemc_bringup                                        [ Unrelated job failed ]
Abandoned <<< reemc_controller_configuration                       [ Unrelated job failed ]
Abandoned <<< reemc_controller_configuration_gazebo                [ Unrelated job failed ]
Abandoned <<< reemc_description                                    [ Unrelated job failed ]
Abandoned <<< reemc_gazebo                                         [ Unrelated job failed ]
Abandoned <<< reemc_motion_tutorials                               [ Unrelated job failed ]
Abandoned <<< reemc_perception_tutorials                           [ Unrelated job failed ]
Abandoned <<< reemc_vision_tutorials                               [ Unrelated job failed ]
Abandoned <<< rqt_controller_manager                               [ Unrelated job failed ]
Abandoned <<< temperature_sensor_controller                        [ Unrelated job failed ]
Abandoned <<< gazebo_ros_control                                   [ Unrelated job failed ]
Abandoned <<< pal_hardware_gazebo                                  [ Unrelated job failed ]
Abandoned <<< pal_transmissions                                    [ Unrelated job failed ]
Abandoned <<< reemc_effort_control                                 [ Unrelated job failed ]
Abandoned <<< reemc_hardware_gazebo                                [ Unrelated job failed ]
Abandoned <<< twist_mux                                            [ Unrelated job failed ]
Abandoned <<< velocity_controllers                                 [ Unrelated job failed ]
Finished  <<< pal_wifi_localization_msgs                           [ 4.1 seconds ]
Finished  <<< play_motion_msgs                                     [ 5.7 seconds ]
Finished  <<< pal_visual_localization_msgs                         [ 6.4 seconds ]
[build] Summary: 29 of 87 packages succeeded.                                  
[build]   Ignored:   8 packages were skipped or are blacklisted.               
[build]   Warnings:  None.                                                     
[build]   Abandoned: 57 packages were abandoned.                               
[build]   Failed:    1 packages failed.                                        
[build] Runtime: 1 minute and 8.4 seconds total.                               
[build] Note: Workspace packages have changed, please re-source setup files to use them.

I initially tried to set up ubuntu 16.04 and the rest in a docker, which didn't work the way I described it above, so I installed everything in the usual in a separate partition on my computer, and I face the same issue.

Any idea how I could get these packages installed?

2) second question: if I go on from there and launch reemc-gazebo with the command:

roslaunch reemcgazebo reemcempty_world.launch

I get as error:

... logging to /home/reavhen/.ros/log/1fb4025a-fb09-11ec-89a8-b88a60b44b5f/roslaunch-BenPC-5335.log
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.

xacro: Traditional processing is deprecated. Switch to --inorder processing!
To check for compatibility of your document, use option --check-order.
For more infos, see http://wiki.ros.org/xacro#Processing_Order
inconsistent namespace redefinitions for xmlns:xacro:
 old: http://www.ros.org/wiki/xacro
 new: http://ros.org/wiki/xacro (/home/reavhen/reemc_ws/src/reemc_robot/reemc_description/urdf/leg/leg.urdf.xacro)
inconsistent namespace redefinitions for xmlns:xacro:
 old: http://www.ros.org/wiki/xacro
 new: http://ros.org/wiki/xacro (/home/reavhen/reemc_ws/src/reemc_robot/reemc_description/urdf/torso/torso.urdf.xacro)
variable filename is supported with --inorder option only None None
when processing file: /home/reavhen/reemc_ws/src/reemc_robot/reemc_description/robots/reemc_full_ft_hey5.urdf.xacro
while processing /home/reavhen/reemc_ws/src/reemc_simulation/reemc_gazebo/launch/reemc_gazebo.launch:
while processing /home/reavhen/reemc_ws/src/reemc_simulation/reemc_gazebo/launch/reemc_spawn.launch:
while processing /home/reavhen/reemc_ws/src/reemc_robot/reemc_description/robots/upload_reemc.launch:
Invalid <param> tag: Cannot load command parameter [robot_description]: command [xacro '/home/reavhen/reemc_ws/src/reemc_robot/reemc_description/robots/reemc_full_ft_hey5.urdf.xacro' head_version:=v0 leg_version:=v0] returned with code [2]. 

Param xml is <param command="xacro '$(find reemc_description)/robots/reemc_$(arg robot).urdf.xacro' head_version:=$(arg head_version) leg_version:=$(arg leg_version)" name="robot_description"/>
The traceback for the exception was written to the log file

I did read the following:

https://answers.ros.org/question/122021/xacro-problem-invalid-param-tag-cannot-load-command-parameter-robot_description/

And corrected the .launch file with the following:

<param name="robot_description" command="rosrun xacro xacro --inorder '/path/to/workspace/reemc_ws/src/reemc_robot/reemc_description/robots/reemc_full_ft_hey5.urdf.xacro' head_version:=$(arg head_version) l$

I don't understand why this error is still in the package and hasn't been corrected. Any idea how I could convey this information to the right person so that this gets corrected?

Thanks, hope I could make myself understandable, first post here.

Cheers

Benoit