Invalid access to memory - @Unixdriveview@Register$qqrv

I just closed WinSCP.

WinSCP 6.5.1

Error message:
Invalid access to memory.

Stack trace:
(00D41626)
(00EF4DCA)
(00EF6E42)
(00EF3BEC)
(0008818F) ntdll.dll
(00074711) ntdll.dll.KiUserExceptionDispatcher
(00BB6BCD)
(0040C87D)
(0050E294)
(003A3431)
(0040CB26)
(003A358B)
(003A3431)
(003A293C)
(00204B54)
(000405E9) USER32.dll
(00036CD5) USER32.dll
(000368EB) USER32.dll
(0003ADAD) USER32.dll
(000746CB) ntdll.dll.KiUserCallbackDispatcher
(00034F58) USER32.dll.SendMessageW
(00068881) COMCTL32.DLL
(000288A2) COMCTL32.DLL
(00028777) COMCTL32.DLL
(0003C0CF) COMCTL32.DLL
(0003C09B) COMCTL32.DLL
(0003C09B) COMCTL32.DLL
(0003C09B) COMCTL32.DLL
(0003B9DB) COMCTL32.DLL
(0003EBC1) COMCTL32.DLL
(000405E9) USER32.dll
(00036CD5) USER32.dll
(00036401) USER32.dll.GetSystemMetricsForDpi
(00034C36) USER32.dll.CallWindowProcW
(003A3539)
(003A3431)
(0040CB26)
(00204B54)
(000405E9) USER32.dll
(00036CD5) USER32.dll
(00036401) USER32.dll.GetSystemMetricsForDpi
(00034C36) USER32.dll.CallWindowProcW
(005393AB)
(00204B54)
(000405E9) USER32.dll
(00036CD5) USER32.dll
(000368EB) USER32.dll
(0003ADAD) USER32.dll
(000746CB) ntdll.dll.KiUserCallbackDispatcher
(00034F58) USER32.dll.SendMessageW
(00409355)
(00BB5D6C) @Unixdriveview@Register$qqrv
(00BB247D) @TUnixDirView@DoSetTerminal$qqrp9TTerminalo
(0005C022)
(00008AB1)
(000089C9)
(00006EDC)
(0005A3CA) @@Nonvisual@Finalize
(0012A185)
(000033BB)
(00EF2B0D)
(000672AC) ntdll.dll.RtlGetAppContainerNamedObjectPath
(00067279) ntdll.dll.RtlGetAppContainerNamedObjectPath

(00D36BF8)
(0008818F) ntdll.dll
(00074711) ntdll.dll.KiUserExceptionDispatcher
(00D36E61)
(00D41976)
(00BB6BCD)
(0040C87D)
(0050E294)
(003A3431)
(0040CB26)
(003A358B)
(003A3431)
(003A293C)
(00204B54)
(000405E9) USER32.dll
(00036CD5) USER32.dll
(000368EB) USER32.dll
(0003ADAD) USER32.dll
(000746CB) ntdll.dll.KiUserCallbackDispatcher
(00034F58) USER32.dll.SendMessageW
(00068881) COMCTL32.DLL
(000288A2) COMCTL32.DLL
(00028777) COMCTL32.DLL
(0003C0CF) COMCTL32.DLL
(0003C09B) COMCTL32.DLL
(0003C09B) COMCTL32.DLL
(0003C09B) COMCTL32.DLL
(0003B9DB) COMCTL32.DLL
(0003EBC1) COMCTL32.DLL
(000405E9) USER32.dll
(00036CD5) USER32.dll
(00036401) USER32.dll.GetSystemMetricsForDpi
(00034C36) USER32.dll.CallWindowProcW
(003A3539)
(003A3431)
(0040CB26)
(00204B54)
(000405E9) USER32.dll
(00036CD5) USER32.dll
(00036401) USER32.dll.GetSystemMetricsForDpi
(00034C36) USER32.dll.CallWindowProcW
(005393AB)
(00204B54)
(000405E9) USER32.dll
(00036CD5) USER32.dll
(000368EB) USER32.dll
(0003ADAD) USER32.dll
(000746CB) ntdll.dll.KiUserCallbackDispatcher
(00034F58) USER32.dll.SendMessageW
(00409355)
(00BB5D6C) @Unixdriveview@Register$qqrv
(00BB247D) @TUnixDirView@DoSetTerminal$qqrp9TTerminalo
(0005C022)%2

The problem happens rarely. I cannot reproduce it.