Exception when calling ABB.Robotics.Controllers.RapidDomain.Task.SaveProgramToFile

First I check all Controllers:

foreach (ControllerObjectReference controllerReference in ControllerManager.ControllerReferences)

Then all the Tasks der Controller checked: (ABB.Robotics.Controllers.Controller)

var rapidTasks = controller.Rapid.GetTasks();

Then the Modules should be saved:

{

private readonly ABB.Robotics.Controllers.RapidDomain.Task_task;

string f = “d:\01_DATEN\03_Temp\” + _task.Name;

try

{

_task.SaveProgramToFile(f);

}

catch (Exception ex)

{

Logger.AddMessage("Problem saving file " + f + ex);

}

…..

}