<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
I am using WinSCP now for years, and this is an first time, but I tried twice and it 'bommed' twice at a similar point. I was busy to 'sync' between a Linux Ubuntu over a local ethernet . Window 10 Prof running on AMD Thread Ripper, SDD. Because it is between two machines it is difficult to send files and create a similar setup.
<If relevant, consider attaching a session log file or a screenshot)>
WinSCP 5.15.1
Error message:
Invalid access to memory.
Stack trace:
(002B6E93) Vcl::Comctrls::TListItem::GetChecked
(0092636E) C5153_3
(009283D6) ____ExceptionHandler
(00925190) __ExceptionHandler
(0007E19F) ntdll.dll
(009269D9) C5153_3
(00927F0C) _ThrowExceptionLDTC
(0070A52B) RethrowException
(008BA2BF) TSynchronizeChecklistDialog::Execute
(008B9379) DoSynchronizeChecklistDialog
(0001D7AB) TCustomScpExplorerForm::DoFullSynchronizeDirectories
(0004DE7A) TScpCommanderForm::FullSynchronizeDirectories
(00046493) TNonVisualDataModule::ExplorerActionsExecute
(003E6E90) System::Actions::TContainedActionList::ExecuteAction
(001C5A79) Vcl::Actnlist::TCustomAction::Execute
(003A346C) System::Classes::_18201
(0003AF19) USER32.dll
(000373E5) USER32.dll
(00036C99) USER32.dll
(00036A7B) USER32.dll.DispatchMessageW
The problem happens rarely. I cannot reproduce it.