Application crashes at launch-time

[high_flyer]

well, settingUp() is a bunch of if() clauses.
Probably none of them gets to be true, so nothing happens.
Put a debug statement in and see if its being printed:

bool Dialog::settingUp()
 {
     qDebug()<<"Dialog::settingUp()";
    //the rest of your code.
}

bool Dialog::settingUp()
 {
     qDebug()<<"Dialog::settingUp()";
    //the rest of your code.
}

To copy to clipboard, switch view to plain text mode 

In addition make sure you get no signal/slot warnings when you execute the application.