i am having a problem with the MantaRay topics. If I run a publisher in Java and a subscriber in C++ it seems they can't find each other. Running a Java subscriber at the same time and i see the java subscriber gets the messages. Same thing happens if I set up a C++ publisher: The C++ subscriber receives the messages but the Java subscriber doesn't.
Your subscribers and publishers aren't set up exactly the same way. Are you running it on seperate machines? Was able to get the C++ to Java Mantaray code to work. Had a lot of path problems but once we fixed and compiled those it ran like a champ.