Error reading ColorImageList192.Bitmap: Failed to read ImageList data from stream - Vcl::Imglist::TCustomImageList::ReadD3Stream

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

WinSCP 6.1.2

Error message:
Error reading ColorImageList192.Bitmap: Failed to read ImageList data from stream

Rastreo de la pila:
(00345D50) Vcl::Imglist::TCustomImageList::ReadD3Stream
(00345DCC) Vcl::Imglist::TCustomImageList::ReadData
(003458D7) Vcl::Imglist::TCustomImageList::DefineProperties
(00206197) System::Classes::TReader::ReadProperty
(002059D1) System::Classes::TReader::ReadDataInner
(002059B3) System::Classes::TReader::ReadData
(0021362D) System::Classes::TComponent::ReadState
(00205A45) System::Classes::TReader::ReadDataInner
(00205984) System::Classes::TReader::ReadData
(0021362D) System::Classes::TComponent::ReadState
(003B007D) Vcl::Forms::TCustomForm::ReadState
(00EAB8F0) TSiteAdvancedDialog::ReadState
(0020082A) System::Classes::TStream::ReadComponent
(001F626F) System::Classes::_17089
(001F7BC3) System::Classes::_17116
(001F7C51) System::Classes::InitInheritedComponent
(003AF876) Vcl::Forms::TCustomForm::TCustomForm
(00004E16) Vcl::Forms::TForm::TForm
(00EA3D69) TSiteAdvancedDialog::TSiteAdvancedDialog
(00EA3C9C) DoSiteAdvancedDialog
(00E76521) TLoginDialog::SessionAdvancedActionExecute
(003F6B91) Vcl::Controls::TWinControl::WndProc
(0035EDA0) Vcl::Stdctrls::TButtonControl::WndProc
(003F6CF7) Vcl::Controls::_17076
(003F6B91) Vcl::Controls::TWinControl::WndProc
(003F61D8) Vcl::Controls::TWinControl::MainWndProc
(0021564C) System::Classes::_18201
(00040039) USER32.dll
(00036FE5) USER32.dll
(00036BD5) USER32.dll
(0003A7AD) USER32.dll
(00073F3B) ntdll.dll.KiUserCallbackDispatcher
(000349FA) USER32.dll.SendMessageW
(00035602) COMCTL32.dll
(00074F2E) COMCTL32.dll
(00040039) USER32.dll
(00036FE5) USER32.dll
(000366B2) USER32.dll
(00034856) USER32.dll.CallWindowProcW
(003F6CA2) Vcl::Controls::TWinControl::DefaultHandler
(003F6B91) Vcl::Controls::TWinControl::WndProc
(0035EDA0) Vcl::Stdctrls::TButtonControl::WndProc
(0021564C) System::Classes::_18201
(00040039) USER32.dll
(00036FE5) USER32.dll
(00034D45) USER32.dll
(00034B0B) USER32.dll.DispatchMessageW

(00205FA3) System::Classes::_17687
(002061DD) System::Classes::TReader::ReadProperty
(002059D1) System::Classes::TReader::ReadDataInner
(002059B3) System::Classes::TReader::ReadData
(0021362D) System::Classes::TComponent::ReadState
(00205A45) System::Classes::TReader::ReadDataInner
(00205984) System::Classes::TReader::ReadData
(0021362D) System::Classes::TComponent::ReadState
(003B007D) Vcl::Forms::TCustomForm::ReadState
(00EAB8F0) TSiteAdvancedDialog::ReadState
(0020082A) System::Classes::TStream::ReadComponent
(001F626F) System::Classes::_17089
(001F7BC3) System::Classes::_17116
(001F7C51) System::Classes::InitInheritedComponent
(003AF876) Vcl::Forms::TCustomForm::TCustomForm
(00004E16) Vcl::Forms::TForm::TForm
(00EA3D69) TSiteAdvancedDialog::TSiteAdvancedDialog
(00EA3C9C) DoSiteAdvancedDia

The problem happens rarely. I cannot reproduce it.