I was setuping a ProFTPD server, more precisely I was playing with permissions. I created a file, wrote something, saved, observed that permission was denied, changed the config, wrote something new, etc. And this error occurred.
WinSCP 5.17.2
Error message:
Invalid access to memory.
Stack trace:
(000ACEDF) TTerminalManager::TerminalQueryUser
(00087D7F) ntdll.dll
(00073221) ntdll.dll.KiUserExceptionDispatcher
(00CBFF35) TQueryUserAction::Execute
(00CBC931) TQueueItemProxy::ProcessUserAction
(00018E76) TCustomScpExplorerForm::UserActionTimer
(0025039F) Vcl::Extctrls::TTimer::Timer
(003A4578) System::Classes::_18201
(00043449) USER32.dll
(00023F87) USER32.dll
(000230D9) USER32.dll
(00022EBB) USER32.dll.DispatchMessageW
The problem happens rarely. I cannot reproduce it.