External exception E06D7363

<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 6.5.5

Error message:
External exception E06D7363

Stack trace:
(00168F54) KERNELBASE.dll.RaiseException

Status: other

The problem happens rarely. I cannot reproduce it.