<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 5.13.1

Error message:
Ошибка доступа к памяти.

Трассировка стека:
(007691D8) TStoredSessionList::UpdateStaticUsage
(008BA3F6) C5101_0
(008BC45E) ____ExceptionHandler
(008B9218) __ExceptionHandler
(000461C6) ntdll.dll.RtlRaiseStatus
(00046052) ntdll.dll.KiUserExceptionDispatcher
(0006999D) TGUIConfiguration::UpdateStaticUsage
(000BF0E2) TWinConfiguration::UpdateStaticUsage
(000DD65B) UpdateStaticUsage
(000E021F) Execute
(000024A8) wWinMain
(008B842D) __wstartup
(000627E9) ntdll.dll
(000627B9) ntdll.dll

The problem happens rarely. I cannot reproduce it.