Hi, I am trying to send a serialized object using message_queue but I am getting a boost::interprocess_exception::library_error in the sender side. I think the problem is me but after a lot of google I could not find a way to make it work This is the method where I am trying to send the message: int RemoteMgr::sendMsgToPeers(const IPCMsg &msg) { std::cout << "RemoteMgr::sendMsgToPeers()\n"; std::ostringstream archive_stream; boost::archive::text_oarchive archive(archive_stream); archive << msg; std::string outbound_data = archive_stream.str(); std::vector<char> outbound(outbound_data.begin(), outbound_data.end()); std::cout << "outbound_data = [" << outbound_data << "]\n"; std::cout << "size = " << outbound.size() << "\n"; // TODO: Not working yet. How to send a string with serialized data? message_queue mq_master(open_only, "master_queue"); mq_master.send(&outbound, outbound.size(), 0); } Where IPCMsg is class IPCMsg { public: IPCMsg() {} IPCMsg(const std::string &type, const std::string &payload); ~IPCMsg(); std::string getSender() { return m_sender; } std::string getType() { return m_type; } std::string getPayload() { return m_payload; } template<class Archive> void serialize(Archive & ar, const unsigned int /* file_version */) { ar & BOOST_SERIALIZATION_NVP(m_sender) & BOOST_SERIALIZATION_NVP(m_type) & BOOST_SERIALIZATION_NVP(m_payload); } private: std::string m_sender; std::string m_type; std::string m_payload; }; Receiver code is like this: unsigned int priority; std::size_t recvd_size; IPCMsg msg; std::vector<char> inbound_data(100); std::cout << "Waiting for peers" << std::endl; while (!terminate) { if (mq.try_receive(&inbound_data, inbound_data.size(), recvd_size, priority)) { std::cout << "New message received.\n"; std::string archive_data(&inbound_data[0], inbound_data.size()); std::istringstream archive_stream(archive_data); boost::archive::text_iarchive archive(archive_stream); archive >> msg; std::cout << "msg type = " << msg.getType() << "\n"; } } Hope you can help. Thanks! Luciano