Catastrophic failure error..

Question

hi. i am trying to connect biometric device with my coding. at the time of setting ip address i got the error "Catastrophic failure (Exception from HRESULT: 0x8000FFFF (E_UNEXPECTED))". 

i search the several result but i can't understand. can any one help me. how to fix this problem. is this problem occurred due to system problem or problems in coding.

 

my coding for connect.

 

in this FP_CLOCK is ocx dll file.

 

try

{

string ip = "192.168.1.224";

int port = 5005;

int password = 0;

int machinenumber = 1;

int flag = Convert.ToInt32(true);

FP_CLOCK fp = new FP_CLOCK();

fp.SetIPAddress(ip,port,password);      // here is the error occurred.

fp.OpenCommPort(machinenumber);

fp.EnableDevice(machinenumber,flag);

//DataTable dts = QueryServiceClass.AdapterQuery("select * from Attendance_TB");

}

catch (Exception ex)

{

MessageBox.Show(ex.Message + " " + ex.StackTrace);

}