<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
opening and reading files, error simply appeared
<If relevant, consider attaching a session log file or a screenshot)>
WinSCP 6.5.5
Error message:
External exception E06D7363
Stack trace:
(00164004) KERNELBASE.dll.RaiseException
(000B34EF) ntdll.dll
(0007A66A) ntdll.dll.KiUserExceptionDispatcher
(000938D3) ucrtbase.dll._CxxThrowException
(000DE82F) MSFTEDIT.DLL
(0012F19D) MSFTEDIT.DLL
(000C3BBE) MSFTEDIT.DLL
(0015E382) MSFTEDIT.DLL
(0007C9B5) MSFTEDIT.DLL
(001FCDB9) MSFTEDIT.DLL.RichEditWndProc
(00038B21) USER32.dll
(00026C48) USER32.dll
(000263B5) USER32.dll.CallWindowProcW
(003A3675) Vcl::Controls::TWinControl::DefaultHandler
(00D88D30) TEditorRichEdit::Dispatch
(003A356D) Vcl::Controls::TWinControl::WndProc
(0039DFF8) Vcl::Controls::TControl::Perform
(0039E010) Vcl::Controls::TControl::Perform
(0039CA7E) Vcl::Controls::TControl::GetTextBuf
(00203943) System::Classes::TComponent::UpdateAction
(004AD23C) Vcl::Forms::TCustomForm::CMActionUpdate
(0039E3C2) Vcl::Controls::TControl::WndProc
(003A356D) Vcl::Controls::TWinControl::WndProc
(004A77B4) Vcl::Forms::TCustomForm::WndProc
(00E0706B) Vclcommon::C4884_0
(0039DFF8) Vcl::Controls::TControl::Perform
(004B3A07) Vcl::Forms::TApplication::DispatchAction
(00204C90) System::Classes::_18364
(00038B21) USER32.dll
(00026C48) USER32.dll
(000266EB) USER32.dll
(00032F87) USER32.dll
(0007A644) ntdll.dll.KiUserCallbackDispatcher
(00040143) USER32.dll
(00026411) USER32.dll.SendMessageW
(00398F70) Vcl::Controls::SendAppMessage
(004ACF22) Vcl::Forms::_16859
(004ACF93) Vcl::Forms::TCustomForm::UpdateActions
(004B29EA) Vcl::Forms::TApplication::DoActionIdle
(004B1B9F) Vcl::Forms::TApplication::HandleMessage
(0012A249) Execute
(000033BB) wWinMain
(00EF5205) __wstartup
(0006C6D9) ntdll.dll
(0006C65C) ntdll.dll
The problem happens rarely. I cannot reproduce it.