i have a problem with qimage in qt5

[newgod]

QImage image;
    image.load("/var/project/0x14Server/20132323222329852.gif");
 
    QImage imageMain = image.scaled(163,223,Qt::KeepAspectRatio);
    if(imageMain.isNull()){
        qDebug() << "sss";
    }else{
        imageMain.save("/var/www/novel/BookImages/2013/01/23/aa.jpg","jpg");
    }

QImage image;
    image.load("/var/project/0x14Server/20132323222329852.gif");

    QImage imageMain = image.scaled(163,223,Qt::KeepAspectRatio);
    if(imageMain.isNull()){
        qDebug() << "sss";
    }else{
        imageMain.save("/var/www/novel/BookImages/2013/01/23/aa.jpg","jpg");
    }

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before i using qt5,this code runing with qt4.8 , and there is no problem
now i using qt5
i got a message like this : "qimage is a null image" or sometimes program just exit

[wysota]

Do you have the gif image plugin installed?