I'd be quite surprised that it has much to do with the vector. I tried
for security on a tutorial and all works ok.
I'd more likely suspect an incorrect state machine definition, but
without code I cannot help you much.

I agree that i might have missed something, I was trying to setup the simplest state machine I could with only two states and one transition.

I attached the full project (vs2010 files included) to this email.

Just to point the potential problem, I defined the state machine class (RealStateMachine) this way :

    class StateMachine
        : public boost::msm::front::state_machine_def< StateMachine >
    {
    public:
 
        typedef State_HelloWorld initial_state;
 
        struct transition_table : public boost::mpl::vector
            <
                _row< State_HelloWorld, event::exit, State_Exit >
            >
        {};
 
        StateMachine();
        ~StateMachine();
    };
 
    class RealStateMachine
        : public boost::msm::back::state_machine< StateMachine >
    {
    public:
 
        
 
 
    };

Joël Lamotte.