<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.5.3

Error message:
Invalid pointer operation

Rastreo de la pila:
(000CF8A6) TTerminalManager::ThumbnailNeeded
(000B335F) ntdll.dll
(0007A66A) ntdll.dll.KiUserExceptionDispatcher
(00035A98) TCustomScpExplorerForm::RemoteDirViewThumbnailNeeded
(00BB225C) TUnixDirView::ItemThumbnail
(00506577) Customdirview::TCustomDirView::CNNotify
(0039E2AA) Vcl::Controls::TControl::WndProc
(003A3455) Vcl::Controls::TWinControl::WndProc
(0041AF67) Vcl::Comctrls::TCustomListView::WndProc
(003A35AF) Vcl::Controls::_17122
(003A3455) Vcl::Controls::TWinControl::WndProc
(003A2960) Vcl::Controls::TWinControl::MainWndProc
(00204B78) System::Classes::_18364
(00038B21) USER32.dll
(00026C98) USER32.dll
(0002673B) USER32.dll
(00032FA7) USER32.dll
(0007A644) ntdll.dll.KiUserCallbackDispatcher
(0003F4F3) USER32.dll
(00026461) USER32.dll.SendMessageW
(0009BAB6) COMCTL32.DLL
(0009D01C) COMCTL32.DLL
(000D2359) COMCTL32.DLL
(0009DBBD) COMCTL32.DLL
(00092ED3) COMCTL32.DLL
(00093040) COMCTL32.DLL
(0009312C) COMCTL32.DLL
(000931A7) COMCTL32.DLL
(0009587E) COMCTL32.DLL
(00094602) COMCTL32.DLL
(00038B21) USER32.dll
(00026C98) USER32.dll
(00026405) USER32.dll.CallWindowProcW
(003A355D) Vcl::Controls::TWinControl::DefaultHandler
(003A80E7) Vcl::Controls::TWinControl::WMPrintClient
(0039E2AA) Vcl::Controls::TControl::WndProc
(003A3455) Vcl::Controls::TWinControl::WndProc
(0041AF67) Vcl::Comctrls::TCustomListView::WndProc
(003A3EB3) Vcl::Controls::TWinControl::WMPaint
(0041CE11) Vcl::Comctrls::TCustomListView::WMPaint
(003A3455) Vcl::Controls::TWinControl::WndProc
(0041AF67) Vcl::Comctrls::TCustomListView::WndProc
(00204B78) System::Classes::_18364
(00038B21) USER32.dll
(00026C98) USER32.dll
(00026405) USER32.dll.CallWindowProcW
(00082974) COMCTL32.DLL
(00082A13) COMCTL32.DLL
(0008278C) COMCTL32.DLL
(00038B21) USER32.dll
(00026C98) USER32.dll
(00026405) USER32.dll.CallWindowProcW
(0053941F) Dragdrop::TDragDrop::WndMethod
(00204B78) System::Classes::_18364
(00038B21) USER32.dll
(00026C98) USER32.dll
(0002673B) USER32.dll
(00032FA7) USER32.dll
(0007A644) ntdll.dll.KiUserCallbackDispatcher
(00025C8B) USER32.dll.DispatchMessageW

(000CF8A6) TTerminalManager::ThumbnailNeeded
(0006C6D9) ntdll.dll
(0007A66A) ntdll.dll.KiUserExceptionDispatcher
(00035A98) TCustomScpExplorerForm::RemoteDirViewThumbnailNeeded
(00BB225C) TUnixDirView::ItemThumbnail
(00506577) Customdirview::TCustomDirView::CNNotify
(0039E2AA) Vcl::Controls::TControl::WndProc
(003A3455) Vcl::Controls::TWinControl::WndProc
(0041AF67) Vcl::Comctrls::TCustomListView::WndProc
(003A35AF) Vcl::Controls::_17122
(003A3455) Vcl::Controls::TWinControl::WndProc
(003A2960) Vcl::Controls::TWinControl::MainWndProc
(00204B78) System::Classes::_18364
(00038B21) USER32.dll
(00026C98) USER32.dll
(0002673B) USER32.dll
(00032FA7) USER32.dll
(0007A644) ntdll.dll.KiUserCallbackDispatche

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.