Hi, Starting from a clean Diamondback install, I noticed the Header.h file from std_msgs is not (?) in the include path exported in the manifest. There is the roslib/Header.h file which says it's deprecated and refers to std_msgs/Header.h. That last one however is not there. It's actually in msg_gen/cpp/include/std_msgs/Header.h Is this location supposed to be exported in the manifest as well? Or are the headers not installed correctly? regards, Steven