Invalid access to memory - Vcl::Controls::TWinControl::DefaultHandler
<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)>
Stack trace:
(0009C970) MSFTEDIT.DLL
(00087A7F) ntdll.dll
(000740D1) ntdll.dll.KiUserExceptionDispatcher
(0009D04F) MSFTEDIT.DLL
(001E709C) MSFTEDIT.DLL.RichEditWndProc
(00040209) USER32.dll
(000371C5) USER32.dll
(00036892) USER32.dll
(00034A36) USER32.dll.CallWindowProcW
(003A355D) Vcl::Controls::TWinControl::DefaultHandler
(00D8740C) TEditorRichEdit::Dispatch
(003A3455) Vcl::Controls::TWinControl::WndProc
(003A2960) Vcl::Controls::TWinControl::MainWndProc
(00204B78) System::Classes::_18364
(00040209) USER32.dll
(000371C5) USER32.dll
(00036DB5) USER32.dll
(0003A98D) USER32.dll
(0007408B) ntdll.dll.KiUserCallbackDispatcher
(00034BDA) USER32.dll.SendMessageW
(00039BD9) USER32.dll.SetWindowTextW
(00038F41) USER32.dll
(00038919) USER32.dll
(000387E0) USER32.dll
(00040209) USER32.dll
(000371C5) USER32.dll
(00036DB5) USER32.dll
(0003A98D) USER32.dll
(0007408B) ntdll.dll.KiUserCallbackDispatcher
(0003586C) USER32.dll.GetSystemMetricsForDpi
(00035323) USER32.dll.GetSystemMetricsForDpi
(000745C1) COMCTL32.DLL
(00040209) USER32.dll
(000371C5) USER32.dll
(00036892) USER32.dll
(00034A36) USER32.dll.CallWindowProcW
(003A355D) Vcl::Controls::TWinControl::DefaultHandler
(003A3455) Vcl::Controls::TWinControl::WndProc
(003C7A5C) Vcl::Stdctrls::TButtonControl::WndProc
(00204B78) System::Classes::_18364
(00040209) USER32.dll
(000371C5) USER32.dll
(00036DB5) USER32.dll
(0003A98D) USER32.dll
(0007408B) ntdll.dll.KiUserCallbackDispatcher
(00034BDA) USER32.dll.SendMessageW
(00001DAE) IMM32.DLL.ImmSetActiveContext
(00039604) USER32.dll.GetWindowTextW
(00039458) USER32.dll.GetWindowTextW
(00038900) USER32.dll
(000387E0) USER32.dll
(00040209) USER32.dll
(000371C5) USER32.dll
(00036DB5) USER32.dll
(0003A98D) USER32.dll
(0007408B) ntdll.dll.KiUserCallbackDispatcher
(004AA0FD) Vcl::Forms::TCustomForm::SetActive
(004AAFA6) Vcl::Forms::TCustomForm::WMActivate
(003A3455) Vcl::Controls::TWinControl::WndProc
(004A769C) Vcl::Forms::TCustomForm::WndProc
(00E0573F) Vclcommon::C4884_0
(003A2960) Vcl::Controls::TWinControl::MainWndProc
(00204B78) System::Classes::_18364
(00040209) USER32.dll
(000371C5) USER32.dll
(00036DB5) USER32.dll
(0003A98D) USER32.dll
(0007408B) ntdll.dll.KiUserCallbackDispatcher
(00DB776C) TMessageForm::CMShowingChanged
(003A3455) Vcl::Controls::TWinControl::WndProc
(004A769C) Vcl::Forms::TCustomForm::WndProc
(00E054B8) Vclcommon::C4884_0
(00E0567A) Vclcommon::C4884_0
(0039DEE0) Vcl::Controls::TControl::Perform
(003A2701) Vcl::Controls::TWinControl::UpdateShowing
(003A2816) Vcl::Controls::TWinControl::UpdateControlState
(003A55DA) Vcl::Controls::TWinControl::CMVisibleChanged
(003A3455) Vcl::Controls::TWinControl::WndProc
(004A769C) Vcl::Forms::TCustomForm::WndProc
(00E0573F) Vclcommon::C4884_0
(0039DEE0) Vcl::Controls::TControl::Perform
(0039C90E) Vcl::Controls::TControl::SetVisible
WinSCP 6.5.3
Error message:
Invalid access to memory.
Stack trace:
(0009C970) MSFTEDIT.DLL
(00087A7F) ntdll.dll
(000740D1) ntdll.dll.KiUserExceptionDispatcher
(0009D04F) MSFTEDIT.DLL
(001E709C) MSFTEDIT.DLL.RichEditWndProc
(00040209) USER32.dll
(000371C5) USER32.dll
(00036892) USER32.dll
(00034A36) USER32.dll.CallWindowProcW
(003A355D) Vcl::Controls::TWinControl::DefaultHandler
(00D8740C) TEditorRichEdit::Dispatch
(003A3455) Vcl::Controls::TWinControl::WndProc
(003A2960) Vcl::Controls::TWinControl::MainWndProc
(00204B78) System::Classes::_18364
(00040209) USER32.dll
(000371C5) USER32.dll
(00036DB5) USER32.dll
(0003A98D) USER32.dll
(0007408B) ntdll.dll.KiUserCallbackDispatcher
(00034BDA) USER32.dll.SendMessageW
(00039BD9) USER32.dll.SetWindowTextW
(00038F41) USER32.dll
(00038919) USER32.dll
(000387E0) USER32.dll
(00040209) USER32.dll
(000371C5) USER32.dll
(00036DB5) USER32.dll
(0003A98D) USER32.dll
(0007408B) ntdll.dll.KiUserCallbackDispatcher
(0003586C) USER32.dll.GetSystemMetricsForDpi
(00035323) USER32.dll.GetSystemMetricsForDpi
(000745C1) COMCTL32.DLL
(00040209) USER32.dll
(000371C5) USER32.dll
(00036892) USER32.dll
(00034A36) USER32.dll.CallWindowProcW
(003A355D) Vcl::Controls::TWinControl::DefaultHandler
(003A3455) Vcl::Controls::TWinControl::WndProc
(003C7A5C) Vcl::Stdctrls::TButtonControl::WndProc
(00204B78) System::Classes::_18364
(00040209) USER32.dll
(000371C5) USER32.dll
(00036DB5) USER32.dll
(0003A98D) USER32.dll
(0007408B) ntdll.dll.KiUserCallbackDispatcher
(00034BDA) USER32.dll.SendMessageW
(00001DAE) IMM32.DLL.ImmSetActiveContext
(00039604) USER32.dll.GetWindowTextW
(00039458) USER32.dll.GetWindowTextW
(00038900) USER32.dll
(000387E0) USER32.dll
(00040209) USER32.dll
(000371C5) USER32.dll
(00036DB5) USER32.dll
(0003A98D) USER32.dll
(0007408B) ntdll.dll.KiUserCallbackDispatcher
(004AA0FD) Vcl::Forms::TCustomForm::SetActive
(004AAFA6) Vcl::Forms::TCustomForm::WMActivate
(003A3455) Vcl::Controls::TWinControl::WndProc
(004A769C) Vcl::Forms::TCustomForm::WndProc
(00E0573F) Vclcommon::C4884_0
(003A2960) Vcl::Controls::TWinControl::MainWndProc
(00204B78) System::Classes::_18364
(00040209) USER32.dll
(000371C5) USER32.dll
(00036DB5) USER32.dll
(0003A98D) USER32.dll
(0007408B) ntdll.dll.KiUserCallbackDispatcher
(00DB776C) TMessageForm::CMShowingChanged
(003A3455) Vcl::Controls::TWinControl::WndProc
(004A769C) Vcl::Forms::TCustomForm::WndProc
(00E054B8) Vclcommon::C4884_0
(00E0567A) Vclcommon::C4884_0
(0039DEE0) Vcl::Controls::TControl::Perform
(003A2701) Vcl::Controls::TWinControl::UpdateShowing
(003A2816) Vcl::Controls::TWinControl::UpdateControlState
(003A55DA) Vcl::Controls::TWinControl::CMVisibleChanged
(003A3455) Vcl::Controls::TWinControl::WndProc
(004A769C) Vcl::Forms::TCustomForm::WndProc
(00E0573F) Vclcommon::C4884_0
(0039DEE0) Vcl::Controls::TControl::Perform
(0039C90E)%
The problem happens rarely. I cannot reproduce it.
<If relevant, consider attaching a session log file or a screenshot)>
Stack trace:
(0009C970) MSFTEDIT.DLL
(00087A7F) ntdll.dll
(000740D1) ntdll.dll.KiUserExceptionDispatcher
(0009D04F) MSFTEDIT.DLL
(001E709C) MSFTEDIT.DLL.RichEditWndProc
(00040209) USER32.dll
(000371C5) USER32.dll
(00036892) USER32.dll
(00034A36) USER32.dll.CallWindowProcW
(003A355D) Vcl::Controls::TWinControl::DefaultHandler
(00D8740C) TEditorRichEdit::Dispatch
(003A3455) Vcl::Controls::TWinControl::WndProc
(003A2960) Vcl::Controls::TWinControl::MainWndProc
(00204B78) System::Classes::_18364
(00040209) USER32.dll
(000371C5) USER32.dll
(00036DB5) USER32.dll
(0003A98D) USER32.dll
(0007408B) ntdll.dll.KiUserCallbackDispatcher
(00034BDA) USER32.dll.SendMessageW
(00039BD9) USER32.dll.SetWindowTextW
(00038F41) USER32.dll
(00038919) USER32.dll
(000387E0) USER32.dll
(00040209) USER32.dll
(000371C5) USER32.dll
(00036DB5) USER32.dll
(0003A98D) USER32.dll
(0007408B) ntdll.dll.KiUserCallbackDispatcher
(0003586C) USER32.dll.GetSystemMetricsForDpi
(00035323) USER32.dll.GetSystemMetricsForDpi
(000745C1) COMCTL32.DLL
(00040209) USER32.dll
(000371C5) USER32.dll
(00036892) USER32.dll
(00034A36) USER32.dll.CallWindowProcW
(003A355D) Vcl::Controls::TWinControl::DefaultHandler
(003A3455) Vcl::Controls::TWinControl::WndProc
(003C7A5C) Vcl::Stdctrls::TButtonControl::WndProc
(00204B78) System::Classes::_18364
(00040209) USER32.dll
(000371C5) USER32.dll
(00036DB5) USER32.dll
(0003A98D) USER32.dll
(0007408B) ntdll.dll.KiUserCallbackDispatcher
(00034BDA) USER32.dll.SendMessageW
(00001DAE) IMM32.DLL.ImmSetActiveContext
(00039604) USER32.dll.GetWindowTextW
(00039458) USER32.dll.GetWindowTextW
(00038900) USER32.dll
(000387E0) USER32.dll
(00040209) USER32.dll
(000371C5) USER32.dll
(00036DB5) USER32.dll
(0003A98D) USER32.dll
(0007408B) ntdll.dll.KiUserCallbackDispatcher
(004AA0FD) Vcl::Forms::TCustomForm::SetActive
(004AAFA6) Vcl::Forms::TCustomForm::WMActivate
(003A3455) Vcl::Controls::TWinControl::WndProc
(004A769C) Vcl::Forms::TCustomForm::WndProc
(00E0573F) Vclcommon::C4884_0
(003A2960) Vcl::Controls::TWinControl::MainWndProc
(00204B78) System::Classes::_18364
(00040209) USER32.dll
(000371C5) USER32.dll
(00036DB5) USER32.dll
(0003A98D) USER32.dll
(0007408B) ntdll.dll.KiUserCallbackDispatcher
(00DB776C) TMessageForm::CMShowingChanged
(003A3455) Vcl::Controls::TWinControl::WndProc
(004A769C) Vcl::Forms::TCustomForm::WndProc
(00E054B8) Vclcommon::C4884_0
(00E0567A) Vclcommon::C4884_0
(0039DEE0) Vcl::Controls::TControl::Perform
(003A2701) Vcl::Controls::TWinControl::UpdateShowing
(003A2816) Vcl::Controls::TWinControl::UpdateControlState
(003A55DA) Vcl::Controls::TWinControl::CMVisibleChanged
(003A3455) Vcl::Controls::TWinControl::WndProc
(004A769C) Vcl::Forms::TCustomForm::WndProc
(00E0573F) Vclcommon::C4884_0
(0039DEE0) Vcl::Controls::TControl::Perform
(0039C90E) Vcl::Controls::TControl::SetVisible
WinSCP 6.5.3
Error message:
Invalid access to memory.
Stack trace:
(0009C970) MSFTEDIT.DLL
(00087A7F) ntdll.dll
(000740D1) ntdll.dll.KiUserExceptionDispatcher
(0009D04F) MSFTEDIT.DLL
(001E709C) MSFTEDIT.DLL.RichEditWndProc
(00040209) USER32.dll
(000371C5) USER32.dll
(00036892) USER32.dll
(00034A36) USER32.dll.CallWindowProcW
(003A355D) Vcl::Controls::TWinControl::DefaultHandler
(00D8740C) TEditorRichEdit::Dispatch
(003A3455) Vcl::Controls::TWinControl::WndProc
(003A2960) Vcl::Controls::TWinControl::MainWndProc
(00204B78) System::Classes::_18364
(00040209) USER32.dll
(000371C5) USER32.dll
(00036DB5) USER32.dll
(0003A98D) USER32.dll
(0007408B) ntdll.dll.KiUserCallbackDispatcher
(00034BDA) USER32.dll.SendMessageW
(00039BD9) USER32.dll.SetWindowTextW
(00038F41) USER32.dll
(00038919) USER32.dll
(000387E0) USER32.dll
(00040209) USER32.dll
(000371C5) USER32.dll
(00036DB5) USER32.dll
(0003A98D) USER32.dll
(0007408B) ntdll.dll.KiUserCallbackDispatcher
(0003586C) USER32.dll.GetSystemMetricsForDpi
(00035323) USER32.dll.GetSystemMetricsForDpi
(000745C1) COMCTL32.DLL
(00040209) USER32.dll
(000371C5) USER32.dll
(00036892) USER32.dll
(00034A36) USER32.dll.CallWindowProcW
(003A355D) Vcl::Controls::TWinControl::DefaultHandler
(003A3455) Vcl::Controls::TWinControl::WndProc
(003C7A5C) Vcl::Stdctrls::TButtonControl::WndProc
(00204B78) System::Classes::_18364
(00040209) USER32.dll
(000371C5) USER32.dll
(00036DB5) USER32.dll
(0003A98D) USER32.dll
(0007408B) ntdll.dll.KiUserCallbackDispatcher
(00034BDA) USER32.dll.SendMessageW
(00001DAE) IMM32.DLL.ImmSetActiveContext
(00039604) USER32.dll.GetWindowTextW
(00039458) USER32.dll.GetWindowTextW
(00038900) USER32.dll
(000387E0) USER32.dll
(00040209) USER32.dll
(000371C5) USER32.dll
(00036DB5) USER32.dll
(0003A98D) USER32.dll
(0007408B) ntdll.dll.KiUserCallbackDispatcher
(004AA0FD) Vcl::Forms::TCustomForm::SetActive
(004AAFA6) Vcl::Forms::TCustomForm::WMActivate
(003A3455) Vcl::Controls::TWinControl::WndProc
(004A769C) Vcl::Forms::TCustomForm::WndProc
(00E0573F) Vclcommon::C4884_0
(003A2960) Vcl::Controls::TWinControl::MainWndProc
(00204B78) System::Classes::_18364
(00040209) USER32.dll
(000371C5) USER32.dll
(00036DB5) USER32.dll
(0003A98D) USER32.dll
(0007408B) ntdll.dll.KiUserCallbackDispatcher
(00DB776C) TMessageForm::CMShowingChanged
(003A3455) Vcl::Controls::TWinControl::WndProc
(004A769C) Vcl::Forms::TCustomForm::WndProc
(00E054B8) Vclcommon::C4884_0
(00E0567A) Vclcommon::C4884_0
(0039DEE0) Vcl::Controls::TControl::Perform
(003A2701) Vcl::Controls::TWinControl::UpdateShowing
(003A2816) Vcl::Controls::TWinControl::UpdateControlState
(003A55DA) Vcl::Controls::TWinControl::CMVisibleChanged
(003A3455) Vcl::Controls::TWinControl::WndProc
(004A769C) Vcl::Forms::TCustomForm::WndProc
(00E0573F) Vclcommon::C4884_0
(0039DEE0) Vcl::Controls::TControl::Perform
(0039C90E)%
The problem happens rarely. I cannot reproduce it.