<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)>

HP Laptop was on sleep until it has less than 1% power.
Then i recharged it and put it to sleep without logging in.

WinSCP 6.3.3

Error message:
Invalid access to memory.

Stack trace:
(0040C2AF)
(00098F2F) ntdll.dll
(000781B1) ntdll.dll.KiUserExceptionDispatcher
(004935B1)
(004935B1)
(00493640)
(004A5EE6)
(004932D1)
(003DFF67)
(002271BC)
(00032431) USER32.dll
(00023231) USER32.dll
(00021AE0) USER32.dll
(0002162B) USER32.dll.DispatchMessageW

Status: unknown_rel_addr

The problem happens rarely. I cannot reproduce it.