[v1.8.18] TypeError - OpenNumismat\Collection\Collection.py:457

OpenNumismat: 1.8.18
OS: Windows 10 (10.0.22621)
Python: 3.4.4 (32bit)
Qt: 5.5.1
Locale: uk

Traceback (most recent call last):
File "OpenNumismat\MainWindow.py", line 509, in saveSortingEvent
File "OpenNumismat\ListView.py", line 997, in saveSorting
File "OpenNumismat\Tools\CursorDecorators.py", line 11, in wrapper
File "OpenNumismat\Collection\Collection.py", line 457, in setRowsPos
TypeError: unorderable types: int() < str()