Invalid access to memory

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WinSCP 5.7.5

Error message:
Invalid access to memory.

Stack trace:
(000EF048)
(007E39EA) C4799_0
(007E5A52) ____ExceptionHandler
(007E29CC) __ExceptionHandler
(00041BFE) ntdll.dll.RtlRaiseStatus
(00041A86) ntdll.dll.KiUserExceptionDispatcher

Status: all_insignificant

The problem happens rarely. I cannot reproduce it.