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.

<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:
Errore ottenendo nome cartella remota attuale.

Accesso alla memoria non valido.

Stack trace:
(0034F076) System::Generics::Collections::TList__1<System::Generics::Collections::TPair__2<int, System::DelphiInterface<System::Classes::IInterfaceList> > >::Remove
(007E08AA) C4799_0
(007E2912) ____ExceptionHandler
(007DF88C) __ExceptionHandler
(0007C53F) ntdll.dll

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.