IRISSECURESTARTA causes C++ program to crash.

in C++ program with #include iris-callin.h..  The program crashes when it tries to execute IRISSECURESTARTA. 

const char *username="user", *password="xyz",*exename="Test_Callin";

int termflag = IRIS_PROGMODE|IRIS_TTNONE|IRIS_TTNEVER;

 I notice that "localhost" is not addressed in this call, so maybe this is why it fails?

How is "localhost" referenced with IRISSECURESTARTA?  (This, or some other URL is referenced when logging in using ActiveX controls.)

Note: the %Service_Callin setting is Enabled.