<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 6.1.2

Error message:
Cannot open remote file '/Distribution/Segment2/MHSGT-20240104/mhsgtodb01.ova'.

Invalid access to memory.

Stack trace:
(00C400A4) C3266_0
(01003DEA) C6083_0
(01005E52) ____ExceptionHandler
(01002C0C) __ExceptionHandler
(0009812F) ntdll.dll
(00077D31) ntdll.dll.KiUserExceptionDispatcher
(00C4011A) _ssh2_mac_verify
(00C5C53F) _ssh2_bpp_rekey_inadvisable
(00C5E825) _ssh_ppl_new_prompts
(00C188BE) C3223_0
(00C189B1) _run_toplevel_callbacks
(00D6BCD7) TSecureShell::EventSelectLoop
(00D6AF43) TSecureShell::WaitForData
(00D68382) TSecureShell::Receive
(00DC05FE) TSFTPFileSystem::ReceivePacket
(00DC1BA8) TSFTPFileSystem::ReceiveResponse
(00DC1DB3) TSFTPFileSystem::SendPacketAndReceiveResponse
(00DE6EDF) TSFTPFileSystem::SFTPOpenRemoteFile
(00DE8CFF) TSFTPFileSystem::Sink
(00E1958D) TTerminal::Sink
(00E182D8) TTerminal::SinkRobust
(00E18100) TTerminal::DoCopyToLocal
(00DE8262) TSFTPFileSystem::CopyToLocal
(00E148E3) TTerminal::CopyToParallel
(00E14A25) TTerminal::CopyParallel
(00E17B9C) TTerminal::CopyToLocal
(00D200C5) TDownloadQueueItem::DoTransferExecute
(00D1E4A6) TQueueItem::Execute
(00D1D4D6) TTerminalItem::ProcessEvent
(00D1B80C) TSignalThread::Execute
(000CE0EF) Userinterface::C20_0
(00016BA7) KERNEL32.DLL.BaseThreadInitThunk
(0006AD29) ntdll.dll
(0006ACAA) ntdll.dll

The problem happens rarely. I cannot reproduce it.