[v1.8.1] AttributeError - d:\OpenNumismat\open-numismat\OpenNumismat\MainWindow.py:814

OpenNumismat: 1.8.1
OS: Windows XP (5.1.2600)
Python: 3.4.4 (32bit)
Qt: 5.5.1
Locale: en

Traceback (most recent call last):
File "d:\OpenNumismat\open-numismat\OpenNumismat\MainWindow.py", line 797, in closeEvent
File "d:\OpenNumismat\open-numismat\OpenNumismat\MainWindow.py", line 800, in __shutDown
File "d:\OpenNumismat\open-numismat\OpenNumismat\MainWindow.py", line 814, in __saveParams
AttributeError: 'NoneType' object has no attribute 'pagesParam'