When using the "SET Roi" command in MP 1.2.78 no symbol is placed on my map and an empty waypoint is added to the waypoint list.
Furthermore I'm not able to choose the DO_SET_ROI command in the dropdown list in my list with waypoints. The only option is ROI.
Did someone already succeed using the ROI command with MP 1.2.78 in combination with the ArduCopter 3.1. RC1 firmware?