Zugriffsverletzung - ungültiger Zugriff auf den Speicher - Vcl::Controls::TCustomControl::PaintWindow

<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 5.9.2

Error message:
Zugriffsverletzung - ungültiger Zugriff auf den Speicher.

Stack trace:
(008632C2) __DynamicCastVCLptr
(0008147F) ntdll.dll
(0006F02A) ntdll.dll.KiUserExceptionDispatcher
(00254A1F) Vcl::Controls::TCustomControl::PaintWindow
(0024EDF5) Vcl::Controls::TWinControl::PaintHandler
(0024F5E0) Vcl::Controls::TWinControl::WMPaint
(002549B9) Vcl::Controls::TCustomControl::WMPaint
(0024EC29) Vcl::Controls::TWinControl::WndProc
(0024E270) Vcl::Controls::TWinControl::MainWndProc
(00372BEC) System::Classes::_18201
(0002C2B1) USER32.dll
(0000D885) USER32.dll
(0000D4BB) USER32.dll
(00017B07) USER32.dll
(0006F004) ntdll.dll.KiUserCallbackDispatcher
(0000CF9B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<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 5.9.3

Error message:
Invalid access to memory.

Stack trace:
(00865E9E) __DynamicCastVCLptr
(0003EE3E) ntdll.dll.ZwWow64CallFunction64
(0003F5BA) ntdll.dll.KiUserExceptionDispatcher
(00254F33) Vcl::Controls::TCustomControl::PaintWindow
(0024F309) Vcl::Controls::TWinControl::PaintHandler
(0024FAF4) Vcl::Controls::TWinControl::WMPaint
(00254ECD) Vcl::Controls::TCustomControl::WMPaint
(0024F13D) Vcl::Controls::TWinControl::WndProc
(0024E784) Vcl::Controls::TWinControl::MainWndProc
(00373100) System::Classes::_18201
(00007E6F) USER32.DLL.CallNextHookEx
(00009E98) USER32.DLL
(00008327) USER32.DLL
(00008527) USER32.DLL
(0003F594) ntdll.dll.KiUserCallbackDispatcher
(000096DB) USER32.DLL.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

I was using the functionnality Keep distant directory up to date in background. I can't see how it occurs but when I came back on the interface, the popup appears. It's the first time I see this message on more than 300 days of use.

<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 5.9.3

Error message:
Accès mémoire invalide.

Trace de la pile :
(00865E9E) __DynamicCastVCLptr
(00081D3F) ntdll.dll
(0006F8EA) ntdll.dll.KiUserExceptionDispatcher
(00254F33) Vcl::Controls::TCustomControl::PaintWindow
(0024F309) Vcl::Controls::TWinControl::PaintHandler
(0024FAF4) Vcl::Controls::TWinControl::WMPaint
(00254ECD) Vcl::Controls::TCustomControl::WMPaint
(0024F13D) Vcl::Controls::TWinControl::WndProc
(0024E784) Vcl::Controls::TWinControl::MainWndProc
(00373100) System::Classes::_18201
(0002C2B1) USER32.dll
(0000D885) USER32.dll
(0000D4BB) USER32.dll
(00017B07) USER32.dll
(0006F8C4) ntdll.dll.KiUserCallbackDispatcher
(0000CF9B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<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 5.9.3

Error message:
Invalid access to memory.

Stack trace:
(00865E9E) __DynamicCastVCLptr
(0008519F) ntdll.dll
(000731B1) ntdll.dll.KiUserExceptionDispatcher
(00254F33) Vcl::Controls::TCustomControl::PaintWindow
(0024F309) Vcl::Controls::TWinControl::PaintHandler
(0024FAF4) Vcl::Controls::TWinControl::WMPaint
(00254ECD) Vcl::Controls::TCustomControl::WMPaint
(0024F13D) Vcl::Controls::TWinControl::WndProc
(0024E784) Vcl::Controls::TWinControl::MainWndProc
(00373100) System::Classes::_18201
(00031B59) USER32.dll
(000240EE) USER32.dll
(00023D45) USER32.dll
(0002DC67) USER32.dll
(0007316B) ntdll.dll.KiUserCallbackDispatcher
(0002384B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

Edit local json file.

WinSCP 5.10

Error message:
Ongeldige toegang tot geheugen.

Stack trace:
(00898F86) __DynamicCastVCLptr
(00081D3F) ntdll.dll
(0006F8EA) ntdll.dll.KiUserExceptionDispatcher
(0025D87B) Vcl::Controls::TCustomControl::PaintWindow
(00257C51) Vcl::Controls::TWinControl::PaintHandler
(0025843C) Vcl::Controls::TWinControl::WMPaint
(0025D815) Vcl::Controls::TCustomControl::WMPaint
(00257A85) Vcl::Controls::TWinControl::WndProc
(002570CC) Vcl::Controls::TWinControl::MainWndProc
(0037BA78) System::Classes::_18201
(0002C2B1) USER32.dll
(0000D885) USER32.dll
(0000D4BB) USER32.dll
(00017B07) USER32.dll
(0006F8C4) ntdll.dll.KiUserCallbackDispatcher
(0000CF9B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<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 5.9.4

Error message:
Invalid access to memory.

Stack trace:
(008665DA) __DynamicCastVCLptr
(0005A466) ntdll.dll
(0000F12E) ntdll.dll.KiUserExceptionDispatcher
(0025505F) Vcl::Controls::TCustomControl::PaintWindow
(0024F435) Vcl::Controls::TWinControl::PaintHandler
(0024FC20) Vcl::Controls::TWinControl::WMPaint
(00254FF9) Vcl::Controls::TCustomControl::WMPaint
(0024F269) Vcl::Controls::TWinControl::WndProc
(0024E8B0) Vcl::Controls::TWinControl::MainWndProc
(0037322C) System::Classes::_18201
(000152F7) USER32.dll
(00016311) USER32.dll.GetDC
(00015DE3) USER32.dll
(00015E41) USER32.dll
(0000F107) ntdll.dll.KiUserCallbackDispatcher
(00016885) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<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 5.11.3

Error message:
メモリのアクセス違反

スタック トレース:
(0089CDCD) __DynamicCastVCLptr
(000851DF) ntdll.dll
(00073161) ntdll.dll.KiUserExceptionDispatcher
(0025DABF) Vcl::Controls::TCustomControl::PaintWindow
(00257E95) Vcl::Controls::TWinControl::PaintHandler
(00258680) Vcl::Controls::TWinControl::WMPaint
(0025DA59) Vcl::Controls::TCustomControl::WMPaint
(00257CC9) Vcl::Controls::TWinControl::WndProc
(00257310) Vcl::Controls::TWinControl::MainWndProc
(0037BCBC) System::Classes::_18201
(00032429) USER32.dll
(0002488E) USER32.dll
(000244E5) USER32.dll
(0002E4B7) USER32.dll
(0007311B) ntdll.dll.KiUserCallbackDispatcher
(00023FEB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<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 5.11.2

Error message:
Ошибка доступа к памяти.

Трассировка стека:
(0089C43E) __DynamicCastVCLptr
(0007DA8F) ntdll.dll
(0006B6B1) ntdll.dll.KiUserExceptionDispatcher
(0025DA7B) Vcl::Controls::TCustomControl::PaintWindow
(00257E51) Vcl::Controls::TWinControl::PaintHandler
(0025863C) Vcl::Controls::TWinControl::WMPaint
(0025DA15) Vcl::Controls::TCustomControl::WMPaint
(00257C85) Vcl::Controls::TWinControl::WndProc
(002572CC) Vcl::Controls::TWinControl::MainWndProc
(0037BC78) System::Classes::_18201
(0003AE69) USER32.dll
(00037335) USER32.dll
(00036ED5) USER32.dll
(00039627) USER32.dll
(0006B66B) ntdll.dll.KiUserCallbackDispatcher
(000369CB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

Launching a "Keeping remote directory up to date"
Happened while scanning folders


WinSCP 5.11.2

Error message:
Invalid access to memory.

Stack trace:
(0089C43E) __DynamicCastVCLptr
(0006248E) ntdll.dll
(0000F15E) ntdll.dll.KiUserExceptionDispatcher
(0025DA7B) Vcl::Controls::TCustomControl::PaintWindow
(00257E51) Vcl::Controls::TWinControl::PaintHandler
(0025863C) Vcl::Controls::TWinControl::WMPaint
(0025DA15) Vcl::Controls::TCustomControl::WMPaint
(00257C85) Vcl::Controls::TWinControl::WndProc
(002572CC) Vcl::Controls::TWinControl::MainWndProc
(0037BC78) System::Classes::_18201
(000152F7) USER32.dll
(00016311) USER32.dll.GetDC
(00015DE3) USER32.dll
(00015E41) USER32.dll
(0000F137) ntdll.dll.KiUserCallbackDispatcher
(00016885) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<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 5.13.7

Error message:
Accès mémoire invalide.

Trace de la pile :
(008BEA8A) __DynamicCastVCLptr
(00083FFF) ntdll.dll
(00071931) ntdll.dll.KiUserExceptionDispatcher
(00261B47) Vcl::Controls::TCustomControl::PaintWindow
(0025BF1D) Vcl::Controls::TWinControl::PaintHandler
(0025C708) Vcl::Controls::TWinControl::WMPaint
(00261AE1) Vcl::Controls::TCustomControl::WMPaint
(0025BD51) Vcl::Controls::TWinControl::WndProc
(0025B398) Vcl::Controls::TWinControl::MainWndProc
(0038109C) System::Classes::_18201
(00045359) USER32.dll
(00036297) USER32.dll
(00035E35) USER32.dll
(000427ED) USER32.dll
(000718EB) ntdll.dll.KiUserCallbackDispatcher
(000351AB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

Download files

WinSCP 5.17.10

Error message:
Unzulässiger Zugriff auf einen Speicherbereich.

Stapelverfolgung:
(00F89BB6) __DynamicCastVCLptr
(0008788F) ntdll.dll
(00073EC1) ntdll.dll.KiUserExceptionDispatcher
(00280B0B) Vcl::Controls::TCustomControl::PaintWindow
(0027AEE1) Vcl::Controls::TWinControl::PaintHandler
(0027B6CC) Vcl::Controls::TWinControl::WMPaint
(00280AA5) Vcl::Controls::TCustomControl::WMPaint
(0027AD15) Vcl::Controls::TWinControl::WndProc
(0027A35C) Vcl::Controls::TWinControl::MainWndProc
(003A5978) System::Classes::_18201
(0003DEB9) USER32.dll
(00034E75) USER32.dll
(00034A75) USER32.dll
(0003863D) USER32.dll
(00073E7B) ntdll.dll.KiUserCallbackDispatcher
(000329AB) USER32.dll.DispatchMessageW

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.

<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 5.19.3

Error message:
Ошибка доступа к памяти.

Трассировка стека:
(00FC3216) __DynamicCastVCLptr
(000878AF) ntdll.dll
(00073EE1) ntdll.dll.KiUserExceptionDispatcher
(0028610B) Vcl::Controls::TCustomControl::PaintWindow
(002804E1) Vcl::Controls::TWinControl::PaintHandler
(00280CCC) Vcl::Controls::TWinControl::WMPaint
(002860A5) Vcl::Controls::TCustomControl::WMPaint
(00280315) Vcl::Controls::TWinControl::WndProc
(0027F95C) Vcl::Controls::TWinControl::MainWndProc
(003C7A98) System::Classes::_18201
(00042489) USER32.dll
(00039425) USER32.dll
(00039025) USER32.dll
(0003CBED) USER32.dll
(00073E9B) ntdll.dll.KiUserCallbackDispatcher
(00036F5B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<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 5.19.4

Error message:
Ошибка доступа к памяти.

Трассировка стека:
(00FC3A7A) __DynamicCastVCLptr
(000878AF) ntdll.dll
(00073EE1) ntdll.dll.KiUserExceptionDispatcher
(0028610B) Vcl::Controls::TCustomControl::PaintWindow
(002804E1) Vcl::Controls::TWinControl::PaintHandler
(00280CCC) Vcl::Controls::TWinControl::WMPaint
(002860A5) Vcl::Controls::TCustomControl::WMPaint
(00280315) Vcl::Controls::TWinControl::WndProc
(0027F95C) Vcl::Controls::TWinControl::MainWndProc
(003C7A98) System::Classes::_18201
(000421D9) USER32.dll
(00039175) USER32.dll
(00038D75) USER32.dll
(0003C93D) USER32.dll
(00073E9B) ntdll.dll.KiUserCallbackDispatcher
(00036CAB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<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)>

I opened a stored connection to the server.
I selected Synchronize (local to remote, with preview)
The preview window popped up, with this error message.

WinSCP 5.19.5

Error message:
Invalid access to memory.

Stack trace:
(00FC3EFE) __DynamicCastVCLptr
(0006246E) ntdll.dll
(0000F12E) ntdll.dll.KiUserExceptionDispatcher
(002861D7) Vcl::Controls::TCustomControl::PaintWindow
(002805AD) Vcl::Controls::TWinControl::PaintHandler
(00280D98) Vcl::Controls::TWinControl::WMPaint
(00286171) Vcl::Controls::TCustomControl::WMPaint
(002803E1) Vcl::Controls::TWinControl::WndProc
(0027FA28) Vcl::Controls::TWinControl::MainWndProc
(003C7B64) System::Classes::_18201
(00015307) USER32.dll
(00015D45) USER32.dll
(00015DF3) USER32.dll
(00015E51) USER32.dll
(0000F107) ntdll.dll.KiUserCallbackDispatcher
(00016895) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<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 5.19.6

Error message:
Acceso a memoria no válido

Traza de la pila:
(00FC46C2) __DynamicCastVCLptr
(000878AF) ntdll.dll
(00073EE1) ntdll.dll.KiUserExceptionDispatcher
(002861D7) Vcl::Controls::TCustomControl::PaintWindow
(002805AD) Vcl::Controls::TWinControl::PaintHandler
(00280D98) Vcl::Controls::TWinControl::WMPaint
(00286171) Vcl::Controls::TCustomControl::WMPaint
(002803E1) Vcl::Controls::TWinControl::WndProc
(0027FA28) Vcl::Controls::TWinControl::MainWndProc
(003C7B64) System::Classes::_18201
(00041ED9) USER32.dll
(00038E95) USER32.dll
(00038A95) USER32.dll
(0003C65D) USER32.dll
(00073E9B) ntdll.dll.KiUserCallbackDispatcher
(000369CB) USER32.dll.DispatchMessageW

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

@ottox11: Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.

AUtoamtic synchronization

<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.1.2

Error message:
Invalid access to memory.

Stack trace:
(01003866) __DynamicCastVCLptr
(00087A7F) ntdll.dll
(000740D1) ntdll.dll.KiUserExceptionDispatcher
(003FC987) Vcl::Controls::TCustomControl::PaintWindow
(003F6D5D) Vcl::Controls::TWinControl::PaintHandler
(003F7548) Vcl::Controls::TWinControl::WMPaint
(003FC921) Vcl::Controls::TCustomControl::WMPaint
(003F6B91) Vcl::Controls::TWinControl::WndProc
(003F61D8) Vcl::Controls::TWinControl::MainWndProc
(0021564C) System::Classes::_18201
(0003FEA9) USER32.dll
(00036E55) USER32.dll
(00036A55) USER32.dll
(0003A61D) USER32.dll
(0007408B) ntdll.dll.KiUserCallbackDispatcher
(0003498B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.