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 5.7.5

Error message:
Division by zero

Stack trace:
(006487F3)
(007E39EA)
(007E5A52)
(007E29CC)
(0005A5DA) ntdll.dll
(0000F12E) ntdll.dll.KiUserExceptionDispatcher
(0007812A)
(0070E6F5)
(006488CB)
(0064862C)
(00714965)
(007175B0)
(00722A99)
(0001C74F)
(0003F30B)
(003E869F)
(003E4270)
(003D9662)
(003FEF4F)
(0034021C)
(000152F7) USER32.dll
(00015D35) USER32.dll
(000167CE) USER32.dll
(00016895) USER32.dll.DispatchMessageW

(007E4055)
(007E562F)
(00648720)
(0064862C)
(00714965)
(007175B0)
(00722A99)
(0001C74F)
(0003F30B)
(003E869F)
(003E4270)
(003D9662)
(003FEF4F)
(0034021C)
(000152F7) USER32.dll
(00015D35) USER32.dll
(000167CE) USER32.dll
(00016895) USER32.dll.DispatchMessageW

(007E4055)
(007E562F)
(00714C7C)
(007175B0)
(00722A99)
(0001C74F)
(0003F30B)
(003E869F)
(003E4270)
(003D9662)
(003FEF4F)
(0034021C)
(000152F7) USER32.dll
(00015D35) USER32.dll
(000167CE) USER32.dll
(00016895) USER32.dll.DispatchMessageW

Status: unknown_rel_addr
When I try to copy the file from winSCP to my drive this error occurs

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.