[QGIS-it-user] Error

[giulia chersoni]

Ciao a tutti,

ho un problema ricorrente su QGIS. Ho provato a scaricare un’altra versione ma niente.
Quando devo usare strumenti per cui QGIS mi richiede di specificare il file in uscita (es tutti gli strumenti di geoprocessing), mi compare questo errore:

PS: Sistema operativo OX.

An error has occurred while executing Python code: 
TypeError: QgsEncodingFileDialog(parent: QWidget = None, caption: QString = QString(), directory: QString = QString(), filter: QString = QString(), encoding: QString = QString()): argument 3 has unexpected type 'QPyNullVariant'

Traceback (most recent call last):
  File "/Applications/QGIS.app/Contents/Resources/python/plugins/fTools/tools/doGeoprocessing.py", line 125, in outFile
    (self.shapefileName, self.encoding) = ftools_utils.saveDialog(self)
  File "/Applications/QGIS.app/Contents/Resources/python/plugins/fTools/tools/ftools_utils.py", line 327, in saveDialog
    fileDialog = QgsEncodingFileDialog(parent, QCoreApplication.translate("fTools", "Save output shapefile"), dirName, filtering, encode)
TypeError: QgsEncodingFileDialog(parent: QWidget = None, caption: QString = QString(), directory: QString = QString(), filter: QString = QString(), encoding: QString = QString()): argument 3 has unexpected type 'QPyNullVariant'

Versione Python: 2.7.10 (default, Jul 14 2015, 19:46:27) [GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.39)] 
Versione di QGIS: 2.14.7-Essen Essen, exported 
Path di Python:

/Users/giuliachersoni/.qgis2/python/plugins/processing
/Applications/QGIS.app/Contents/MacOS/../Resources/python
/Users/giuliachersoni/.qgis2/python
/Users/giuliachersoni/.qgis2/python/plugins
/Applications/QGIS.app/Contents/MacOS/../Resources/python/plugins
/Library/Frameworks/SQLite3.framework/Versions/C/Python/2.7
/Library/Frameworks/GEOS.framework/Versions/3/Python/2.7/site-packages
/Library/Python/2.7/site-packages/numpy-override
/Library/Python/2.7/site-packages/matplotlib-override
/Library/Frameworks/GDAL.framework/Versions/2.1/Python/2.7/site-packages
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages
/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old
/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload
/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC
/Library/Python/2.7/site-packages
/Users/giuliachersoni/.qgis2//python
/Applications/QGIS.app/Contents/Resources/python/plugins/fTools/tools

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