Invalid access to memory

When waking computer from hibernation I was met with this error.

WinSCP 5.9.5

Error message:
Invalid access to memory.

Stack trace:
(0028308C)
(0008A61F) ntdll.dll
(00077E7A) ntdll.dll.KiUserExceptionDispatcher
(0040D1C1)
(0040D1C1)
(0040D250)
(0041E2E7)
(0040CF21)
(00225D1B)
(0037326C)
(000374F1) USER32.dll
(00015C3B) USER32.dll
(0001553C) USER32.dll
(000152FB) USER32.dll.DispatchMessageW

Status: unknown_rel_addr

The problem happens rarely. I cannot reproduce it.