Invalid%20access%20to%20memory.%0D%0A%0D%0AStack%20trace%3A%0D%0A%280000587C%29%0D%0A%2800081D3F%29%20ntdll.dll%0D%0A%280006F8EA%29%20ntdll.dll.KiUserExceptionDispatcher%0D%0A%28001DBE43%29%20Vcl%3A%3AForms%3A%3ATCustomForm%3A%3AShowModal

<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 5.7.7

Error message:
Invalid%20access%20to%20memory.%0D%0A%0D%0AStack%20trace%3A%0D%0A%280000587C%29%0D%0A%2800081D3F%29%20ntdll.dll%0D%0A%280006F8EA%29%20ntdll.dll.KiUserExceptionDispatcher%0D%0A%28001DBE43%29%20Vcl%3A%3AForms%3A%3ATCustomForm%3A%3AShowModal

Status: not_matched

The problem happens rarely. I cannot reproduce it.