[Qt] неправильно парсится строчка

void DVDRunner::updateMount()
{
	//Пробуем примонтировать образ в diskPath
	if (core->getSudoProg().isEmpty() || core->forceFuseiso())
	{
	mount = QString("fuseiso \"%1\" \"%2\"").arg(realDrive).arg(diskPath);
	umount = QString("fusermount -u \"%1\"").arg(diskPath);
}
	else
	{
		QString sudo = core->getSudoProg();
		QString mountString = QString ("mount -o loop \"%1\" \"%2\"").arg(realDrive).arg(diskPath);
		QString umountString = QString ("umount \"%1\"").arg(diskPath);
		if (sudo == "kdesu" && QProcessEnvironment::systemEnvironment().contains("KDE_FULL_SESSION"))
		{
			mount = QString ("kdesu -i %1 \"%2\"").arg("winegame").arg(mountString);
			umount = QString ("kdesu -i %1 \"%2\"").arg("winegame").arg(umountString);
		}
		else if (sudo == "gksu")
		{
		 QString mountMsg = tr("Enter password to mount ISO image");
		 QString umountMsg = tr("Enter password to unmount ISO image");
		 mount = QString ("gksu -m \"%1\" -D %2 \"%3\"").arg(mountMsg).arg("WineStuff").arg(mountString);
		 umount = QString ("gksu -m \"%1\" -D %2 \"%3\"").arg(umountMsg).arg("WineStuff").arg(umountString);
			  }
		else if (sudo == "xdg-su")
		{
			mount = QString ("xdg-su -c \"%1\"").arg(mountString);
			umount = QString ("xdg-su -c \"%1\"").arg(umountString);
		}
		else
		{
			//force fuseiso
			mount = QString("fuseiso \"%1\" \"%2\"").arg(realDrive).arg(diskPath);
			umount = QString("fusermount -u \"%1\"").arg(diskPath);
		}
	}
	type = Pashazz::Image;
}