Invalid access to memory - Vcl::Imaging::Pngimage::TPngImage::GetWidth

<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)>

This always happens on application startup. The first or second attempts fail, the second or third attempt runs successfully.

WinSCP 6.3.7

Error message:
Invalid access to memory.

Stack trace:
(FFFFF00B)WinSCP.exe
(00E2529A) C6612_0
(00E27302) ____ExceptionHandler
(00E240BC) __ExceptionHandler
(0008818F) ntdll.dll
(00074711) ntdll.dll.KiUserExceptionDispatcher
(00546720) Vcl::Imaging::Pngimage::TPngImage::GetWidth
(00527F4E) Pngimagelist::_16445
(005283C8) Pngimagelist::TPngImageList::PngToIcon
(005276A9) Pngimagelist::TPngImageList::EndUpdate
(00D32E54) TGlyphsModule::SetPixelsPerInch
(00D32BAB) TGlyphsModule::TGlyphsModule
(00119E9E) Execute
(000031E3) wWinMain
(00E22FFD) C6481_0
(000672AC) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00067279) ntdll.dll.RtlGetAppContainerNamedObjectPath

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.

@richard.nix: 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.