Just started using Boost. Socket only right now. Created one small class but cannot compile. Please help. Compile error is

In file included from Server.cpp:8:
./include/Server.h:26: error: ˇio_service˘ is not a type
./include/Server.h:26: error: expected unqualified-id before ˇ(˘ token
./include/Server.h:26: error: expected `)' before ˇ(˘ token
./include/Server.h:26: error: expected ˇ,˘ or ˇ....˘ before ˇ(˘ token
./include/Server.h:26: error: expected ˇ;˘ before ˇ)˘ token
./include/Server.h:27: error: ˇio_service˘ is not a type


----- My header file:

/*
 * Server.h
 *
 *  Created on: Dec 1, 2008
 *      Author:
 */

#ifndef SERVER_H_
#define SERVER_H_

#include <boost/asio.hpp>


class Server{

public:
    Server(){};
    ~Server(){};

    void print();
protected:

private:

    boost::asio::io_service io_service;
    boost::asio::ip::tcp::acceptor acceptor(io_service, boost::asio::ip::tcp::endpoint(boost::asio::ip::tcp::v4(), 13));
    boost::asio::ip::tcp::socket asio_socket(io_service);
    boost::system::error_code error_read;

};

#endif /* SERVER_H_ */

----- My cpp file:

/*
 * Server.cpp
 *
 *  Created on: Dec 1, 2008
 *      Author:
 */

#include "Server.h"

void Server::print(){

}