Invalid access to memory - _freersakey

<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 5.7.4

Error message:
Invalid access to memory.

Stack trace:
(003ADBB9) System::SysFreeMem
(007E344A) C4799_3
(007E54B2) ____ExceptionHandler
(007E242C) __ExceptionHandler
(00045CC6) ntdll.dll.RtlRaiseStatus
(00045B52) ntdll.dll.KiUserExceptionDispatcher
(007D133F) _free
(005E0C2B) _safefree
(00603A14) _freersakey
(005F0ABB) _sshfwd_unthrottle
(005EF0C7) _sshfwd_unthrottle
(005F2707) _sshfwd_unthrottle
(005E6BD6) C2232_0
(005E6D80) C2232_0
(005E7040) C2232_0
(0060CA85) _select_result
(006A7F57) TSecureShell::HandleNetworkEvents
(006A821A) TSecureShell::ProcessNetworkEvents
(006A780B) TSecureShell::WaitForData
(006A2BC5) TSecureShell::Init
(006A2541) TSecureShell::Open
(0070B542) TTerminal::Open
(00673DF3) TTerminalThread::TerminalOpenEvent
(0066EDD4) TSignalThread::Execute
(00082673) Userinterface::C21_0
(0004DE6A) kernel32.dll.BaseThreadInitThunk
(000624E6) ntdll.dll
(000624B6) ntdll.dll
Authentication log (see session log for details):
Using username "ocrdctest".
Authenticating with public key "".

Authentication failed.

Thanks for your report.
I have sent you an email with a debug version of WinSCP to address you have used to register on this forum.

<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:
Acc�s m�moire invalide.

Trace de la pile :
(003AE10F) System::SysFreeMem
(007E08AA) C4799_0
(007E2912) ____ExceptionHandler
(007DF88C) __ExceptionHandler
(0001DC16) ntdll.dll.RtlRaiseStatus
(0001DA51) ntdll.dll.KiUserExceptionDispatcher
(007CE79F) _free
(005E20A7) _safefree
(00604FC0) _freersakey
(005F2067) _sshfwd_unthrottle
(005F0673) _sshfwd_unthrottle
(005F3CB3) _sshfwd_unthrottle
(005E80CA) C2232_0
(005E8274) C2232_0
(005E8534) C2232_0
(0060E031) _select_result
(006A9A83) TSecureShell::HandleNetworkEvents
(006A9D46) TSecureShell::ProcessNetworkEvents
(006A9337) TSecureShell::WaitForData
(006A46F1) TSecureShell::Init
(006A4019) TSecureShell::Open
(0070D192) TTerminal::Open
(00675747) TTerminalThread::TerminalOpenEvent
(00670728) TSignalThread::Execute
(0008269F) Userinterface::C21_0
(0001EB94) kernel32.dll
Log d'authentification (voir le log de session pour les d�tails) :
Utilisation du nom d'utilisateur "SEMAPHOR".
Authentification avec la cl� publique "rsa-key-256-SEMAPHORE".

Erreur d'authentification

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.