<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

����������� �����:
[011774CF]
[013105DE]
[01312646]
[0130F5C0]
[7788007E] ntdll.dll.ZwWow64CallFunction64
[778807FA] ntdll.dll.KiUserExceptionDispatcher
[00BA8C7A]
[0123C4BD]
[011775A7]
[01177308]
[0124AE9A]
[01250008]
[00B43987]
[00B3DD62]
[00B3DF18]
[00B3DF9F]
[00B630B7]
[00EB2740]
[00C9A2A1]
[00E70678]
[76A38E6F] USER32.DLL.CallNextHookEx
[76A390CC] USER32.DLL
[76A3A66A] USER32.DLL
[76A3A6DB] USER32.DLL.DispatchMessageW

[01310C49]
[01312223]
[011773FC]
[01177308]
[0124AE9A]
[01250008]
[00B43987]
[00B3DD62]
[00B3DF18]
[00B3DF9F]
[00B630B7]
[00EB2740]
[00C9A2A1]
[00E70678]
[76A38E6F] USER32.DLL.CallNextHookEx
[76A390CC] USER32.DLL
[76A3A66A] USER32.DLL
[76A3A6DB] USER32.DLL.DispatchMessageW

Status: symbol_unknown

The problem happens rarely. I cannot reproduce it.