Division by zero

<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

Error message:
Division by zero

Stack trace:
[015A74CF]
[017405DE]
[01742646]
[0173F5C0]
[772EB466] ntdll.dll
[772A012E] ntdll.dll.KiUserExceptionDispatcher
[00FD8C7A]
[0166C4BD]
[015A75A7]
[015A7308]
[01672835]
[0167547C]
[01680965]
[00F7D5FB]
[00FA01BF]
[01348AAB]
[013446B8]
[01339AAA]
[0135F35B]
[012A0678]
[760E62F7] USER32.dll
[760E6D35] USER32.dll
[760E77BF] USER32.dll
[760E7885] USER32.dll.DispatchMessageW

[01740C49]
[01742223]
[015A73FC]
[015A7308]
[01672835]
[0167547C]
[01680965]
[00F7D5FB]
[00FA01BF]
[01348AAB]
[013446B8]
[01339AAA]
[0135F35B]
[012A0678]
[760E62F7] USER32.dll
[760E6D35] USER32.dll
[760E77BF] USER32.dll
[760E7885] USER32.dll.DispatchMessageW

[01740C49]
[01742223]
[01672B4C]
[0167547C]
[01680965]
[00F7D5FB]
[00FA01BF]
[01348AAB]
[013446B8]
[01339AAA]
[0135F35B]
[012A0678]
[760E62F7] USER32.dll
[760E6D35] USER32.dll
[760E77BF] USER32.dll
[760E7885] USER32.dll.DispatchMessageW

Thanks for your report.
I have sent you an email with a debug version of WinSCP to address you have used to register on this forum.