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)>

open two tabs to different servers. sftp.
Tried to create directory on local server. Error.


WinSCP 5.9.3

Error message:
Invalid access to memory.

Stack trace:
(0018EC6F) Vcl::Buttons::TSpeedButton::TSpeedButton
(00081D3F) ntdll.dll
(0006F8EA) ntdll.dll.KiUserExceptionDispatcher
(0036372C) System::Classes::TReader::ReadComponent
(003639DD) System::Classes::TReader::ReadDataInner
(0036391C) System::Classes::TReader::ReadData
(0037150D) System::Classes::TComponent::ReadState
(003648F7) System::Classes::TReader::ReadRootComponent
(0035E7C2) System::Classes::TStream::ReadComponent
(00354207) System::Classes::_17089
(00355B5B) System::Classes::_17116
(00355B30) System::Classes::_17116
(00355BE9) System::Classes::InitInheritedComponent
(00207AC0) Vcl::Forms::TCustomFrame::TCustomFrame
(007A6E6A) Vcl::Forms::TFrame::TFrame
(007FB501) TRightsFrame::TRightsFrame
(007FC9BE) TRightsExtFrame::TRightsExtFrame
(00363501) System::Classes::_17670
(0036372C) System::Classes::TReader::ReadComponent
(003639DD) System::Classes::TReader::ReadDataInner
(0036394B) System::Classes::TReader::ReadData
(0037150D) System::Classes::TComponent::ReadState
(003637C3) System::Classes::TReader::ReadComponent
(003639DD) System::Classes::TReader::ReadDataInner
(0036394B) System::Classes::TReader::ReadData
(0037150D) System::Classes::TComponent::ReadState
(003637C3) System::Classes::TReader::ReadComponent
(003639DD) System::Classes::TReader::ReadDataInner
(0036391C) System::Classes::TReader::ReadData
(0

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.