Ошибка доступа к памяти - Vcl::Comctrls::TCustomListView::EditWndProc

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WinSCP 6.1.2

Error message:
Ошибка доступа к памяти.

Трассировка стека:
(0009BFD8) iwprn_x86.dll
(0008627F) ntdll.dll
(00072C01) ntdll.dll.KiUserExceptionDispatcher
(00090CFB) iwprn_x86.dll
(0008A0B3) iwprn_x86.dll
(00080CFC) iwprn_x86.dll
(000E5FC9) COMCTL32.DLL
(000AC5D5) COMCTL32.DLL
(0003DF59) USER32.dll
(00034EC5) USER32.dll
(000345A2) USER32.dll
(00032746) USER32.dll.CallWindowProcW
(00437D10) Vcl::Comctrls::TCustomListView::EditWndProc
(0021564C) System::Classes::_18201
(0003DF59) USER32.dll
(00034EC5) USER32.dll
(000345A2) USER32.dll
(00032746) USER32.dll.CallWindowProcW
(00193035) COMCTL32.DLL
(0003DF59) USER32.dll
(00034EC5) USER32.dll
(00034AC5) USER32.dll
(0003868D) USER32.dll
(00072BBB) ntdll.dll.KiUserCallbackDispatcher
(000328EA) USER32.dll.SendMessageW
(000F5FD7) COMCTL32.DLL
(000AC8B6) COMCTL32.DLL
(0007305E) COMCTL32.DLL
(0003DF59) USER32.dll
(00034EC5) USER32.dll
(000345A2) USER32.dll
(00032746) USER32.dll.CallWindowProcW
(00437D10) Vcl::Comctrls::TCustomListView::EditWndProc
(0021564C) System::Classes::_18201
(0003DF59) USER32.dll
(00034EC5) USER32.dll
(000345A2) USER32.dll
(00032746) USER32.dll.CallWindowProcW
(00193035) COMCTL32.DLL
(0003DF59) USER32.dll
(00034EC5) USER32.dll
(00032C35) USER32.dll
(000329FB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.