<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 5.15.2

Error message:
External exception C0000006

Trace de la pile :
(00925E5F) C5109_0
(00087C8F) ntdll.dll
(00073131) ntdll.dll.KiUserExceptionDispatcher
(0001A13F) TCustomScpExplorerForm::DoDirViewExecFile
(00019F6A) TCustomScpExplorerForm::DirViewExecFile
(00446051) Customdirview::TCustomDirView::DoExecFile
(000421CB) TNonVisualDataModule::ExplorerActionsExecute
(003E75CC) System::Actions::TContainedActionList::ExecuteAction
(001C61B5) Vcl::Actnlist::TCustomAction::Execute
(003A3BA8) System::Classes::_18201
(000438E9) USER32.dll
(00025137) USER32.dll
(00024289) USER32.dll
(0002406B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.