Acceso a memoria no válido

<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 5.17.8

Error message:
Acceso a memoria no válido

Traza de la pila:
(00355EEF) MSHTML.dll
(00088F4F) ntdll.dll
(000743E1) ntdll.dll.KiUserExceptionDispatcher
(003514E1) MSHTML.dll
(00369B33) MSHTML.dll
(0035CCCF) MSHTML.dll
(0035CB95) MSHTML.dll
(003639B5) MSHTML.dll
(00363753) MSHTML.dll
(003636A3) MSHTML.dll
(0035A54B) MSHTML.dll
(0036CA0B) MSHTML.dll
(003E7792) MSHTML.dll
(003E722F) MSHTML.dll
(0006F909) URLMON.DLL
(0006F6A0) URLMON.DLL
(0006ED13) URLMON.DLL
(000423C0) URLMON.DLL
(000426B9) URLMON.DLL
(00029916) URLMON.DLL
(0004048E) URLMON.DLL
(00040C81) URLMON.DLL
(0007503E) URLMON.DLL
(0002B704) URLMON.DLL
(000437A9) USER32.dll
(000242A7) USER32.dll
(000233F9) USER32.dll
(000231DB) USER32.dll.DispatchMessageW

(00355EEF) MSHTML.dll
(00088F4F) ntdll.dll
(000743E1) ntdll.dll.KiUserExceptionDispatcher
(003514E1) MSHTML.dll
(00369B33) MSHTML.dll
(0035CCCF) MSHTML.dll
(0035CB95) MSHTML.dll
(003639B5) MSHTML.dll
(00363753) MSHTML.dll
(003636A3) MSHTML.dll
(0035A54B) MSHTML.dll
(0036CA0B) MSHTML.dll
(003E7792) MSHTML.dll
(003E722F) MSHTML.dll
(0006F909) URLMON.DLL
(0006F6A0) URLMON.DLL
(0006ED13) URLMON.DLL
(000423C0) URLMON.DLL
(000426B9) URLMON.DLL
(00029916) URLMON.DLL
(0004048E) URLMON.DLL
(00040C81) URLMON.DLL
(0007503E) URLMON.DLL
(0002B704) URLMON.DLL
(000437A9) USER32.dll
(000242A7) USER32.dll
(000233F9) USER32.dll
(000231DB) USER32.dll.DispatchMessageW

(00355EEF) MSHTML.dll
(00F89E6E) C5296_0
(00F8BED6) ____ExceptionHandler
(00F88C90) __ExceptionHandler
(00088F4F) ntdll.dll
(000743E1) ntdll.dll.KiUserExceptionDispatcher
(003514E1) MSHTML.dll
(00369B33) MSHTML.dll
(0035CCCF) MSHTML.dll
(0035CB95) MSHTML.dll
(003639B5) MSHTML.dll
(00363753) MSHTML.dll
(003636A3) MSHTML.dll
(0035A54B) MSHTML.dll
(0036CA0B) MSHTML.dll
(003E7792) MSHTML.dll
(003E722F) MSHTML.dll
(0006F909) URLMON.DLL
(0006F6A0) URLMON.DLL
(0006ED13) URLMON.DLL
(000423C0) URLMON.DLL
(000426B9) URLMON.DLL
(00029916) URLMON.DLL
(0004048E) URLMON.DLL
(00040C81) URLMON.DLL
(0007503E) URLMON.DLL
(0002B704) URLMON.DLL
(000437A9) USER32.dll
(000242A7) USER32.dll
(000233F9) USER32.dll
(000231DB) USER32.dll.DispatchMessageW

Status: all_insignificant

The problem happens rarely. I cannot reproduce it.