Qt 4.7 : error: call of overloaded ‘QString(int)’ is ambiguous

[Astronomy]

Hello,

today i tried to port my App from Qt 4.5.3 to Qt 4.7 (under ubuntu 32bit 10.04 )
I got several: error: call of overloaded ‘QString(int)’ is ambiguous

Detailed Error Message:
Astro_Diplom/ComaGui/ui_jobs.h: In member function ‘void Ui_Jobs::setupUi(QDialog*)’:
Astro_Diplom/ComaGui/ui_jobs.h:86: error: call of overloaded ‘QString(int)’ is ambiguous
qtsdk-2010.05/qt/include/QtCore/qstring.h:428: note: candidates are: QString::QString(const QByteArray&)
qtsdk-2010.05/qt/include/QtCore/qstring.h:426: note: QString::QString(const char*)
qtsdk-2010.05/qt/include/QtCore/qstring.h:727: note: QString::QString(const QString&)
qtsdk-2010.05/qt/include/QtCore/qstring.h:106: note: QString::QString(QChar)
qtsdk-2010.05/qt/include/QtCore/qstring.h:105: note: QString::QString(const QChar*)
Astro_Diplom/ComaGui/ui_jobs.h:89: error: call of overloaded ‘QString(int)’ is ambiguous


My custom widget "Form" is inherited from QWidget...
Many Form widgets are in Jobs and..
Jobs is inherited from QDialog and the compiler stops here..

ui_jobs.h

class Ui_Jobs
{
public:
    ...
    Physical *widgetJobTemperatur;
    ...
    void setupUi(QDialog *Jobs)
    {
 
       ...
 
       widgetJobTemperatur = new Form(Jobs);    //Compiler stops here..
       widgetJobTemperatur->setObjectName(QString::fromUtf8("widgetJobTemperatur"));
       widgetJobTemperatur->setGeometry(QRect(110, 197, 217, 117));
     }
 
}

class Ui_Jobs
{
public:
    ...
    Physical *widgetJobTemperatur;
    ...
    void setupUi(QDialog *Jobs)
    {

       ...

       widgetJobTemperatur = new Form(Jobs);    //Compiler stops here..
       widgetJobTemperatur->setObjectName(QString::fromUtf8("widgetJobTemperatur"));
       widgetJobTemperatur->setGeometry(QRect(110, 197, 217, 117));
     }

}

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It seems that Qt4.7 is somehow more restrictive during compilation, than 4.5.3 ?
Under 4.5.3 everything is working fine..?

thank you for any hint,
Astronomy

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(Form are physical widgets, i took a bad name and hadn't had time to change it..)