@epatyme: 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 6.3.4

Error message:
Out of memory

Rastreo de la pila:
(002A5CC2)
(002A5CC2)
(00D297A3)
(00CE8241)
(00107427)
(00107D30)
(00107F7E)
(00109BAC)
(000D39B9)
(000D2D10)
(000031E3)
(00E20B11)
(000670CC)ntdll.dll
(00067099)ntdll.dll

Status: unknown_rel_addr

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.