[Qgis-developer] Field calculator in Processing error

[matteo]

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Hi all,
I'm trying to open and use the Field Calculator of Processing, but I
receive this error:

An error has occured while executing Python code:

AttributeError: FieldsCalculator instance has no attribute 'TYPE_NAMES'
Traceback (most recent call last):
  File
"/home/ma7730/.qgis2/python/plugins/processing/gui/ProcessingToolbox.py"
,
line 208, in executeAlgorithm
    dlg = alg.getCustomParametersDialog()
  File
"/home/ma7730/.qgis2/python/plugins/processing/algs/qgis/FieldsCalculato
r.py",
line 161, in getCustomParametersDialog
    return FieldsCalculatorDialog(self)
  File
"/home/ma7730/.qgis2/python/plugins/processing/algs/qgis/ui/FieldsCalcul
atorDialog.py",
line 70, in __init__
    self.manageGui()
  File
"/home/ma7730/.qgis2/python/plugins/processing/algs/qgis/ui/FieldsCalcul
atorDialog.py",
line 78, in manageGui
    for t in self.alg.TYPE_NAMES:
AttributeError: FieldsCalculator instance has no attribute 'TYPE_NAMES'


Python version: 2.7.10 (default, Sep 13 2015, 20:30:50) [GCC 5.2.1
20150911]
QGIS version: 2.11.0-Master Master, a721752



Master version of QGIS on a Debian testing machine.
Should I open a ticket?

Thanks

Matteo
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