Could you attach this PhilaCollection.ui file into the bug report?

This message wasn't sent by PySide but by Qt itself, your .ui file may be
corrupted or malformed.

Created attachment 295 [details]
ui file from designer

this file has been generated with Qt Designer 4.6.2

Thanks!

Your example works on C++, so it might be a PySide fault.

As a workaround you can use:

from PySide.QtCore import *
from PySide.QtGui import *
from PySide.QtUiTools import *

app = QApplication([])
loader = QUiLoader()
loader.load("./PhilaCollection.ui")

thank you for the workaround.
with that theres is no longer an error, and the display is quite correc (excep
for the size of the window)
But unfotunatly right now I don't understant how to access to the various
objects embeded in in the window
for exemple in the following code vignette is a Qlabel in wich I want to put an
image but this objetct seem unknow

import sys
import  os.path
from PySide import QtGui, QtCore
from PySide import QtUiTools
from PySide import QtWebKit
from sites import *


class Main(QtGui.QMainWindow):
    def __init__(self):

        QtGui.QMainWindow.__init__(self)
        loader = QtUiTools.QUiLoader()
        self.setCentralWidget(loader.load("./PhilaCollection.ui"))
        self.resize(1024,768)
        image=QtGui.QPixmap("7.jpg")
        self.mainWindow.Vignette.setPixmap(image)


if __name__ == "__main__":
    app = QtGui.QApplication(sys.argv)
    window = Main()
    window.show()
    sys.exit(app.exec_())

Fixed in commit:

pyside/4175398b071c05bcc7166533c97972bd94a688ff

PySide release 1.0.3