Thanks for your report. Please upgrade first.

<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 5.7.6

Error message:
Out%20of%20memory%0D%0A%0D%0AStack%20trace%3A%0D%0A%28003B215E%29%20System%3A%3ANewUnicodeString%0D%0A%28003B215E%29%20System%3A%3ANewUnicodeString%0D%0A%280033F0D7%29%20System%3A%3AClasses%3A%3ATComponent%3A%3AUpdateAction%0D%0A%28001DC038%29%20Vcl%3A%3AForms%3A%3ATCustomForm%3A%3ACMActionUpdate%0D%0A%28002177D1%29%20Vcl%3A%3AControls%3A%3ATControl%3A%3AWndProc%0D%0A%280021C315%29%20Vcl%3A%3AControls%3A%3ATWinControl%3A%3AWndProc%0D%0A%28001D70B8%29%20Vcl%3A%3AForms%3A%3ATCustomForm%3A%3AWndProc%0D%0A%280078D54D%29%20Vclcommon%3A%3AC2516_0%0D%0A%280021740C%29%20Vcl%3A%3AControls%3A%3ATControl%3A%3APerform%0D%0A%28001E226F%29%20Vcl%3A%3AForms%3A%3ATApplication%3A%3ADispatchAction%0D%0A%28003402A8%29%20System%3A%3AClasses%3A%3A_18201%0D%0A%28000152F7%29%20USER32.dll%0D%0A%2800015D35%29%20USER32.dll%0D%0A%2800015DE3%29%20USER32.dll%0D%0A%2800015E41%29%20USER32.dll%0D%0A%280000F117%29%20ntdll.dll.KiUserCallbackDispatcher%0D%0A%28000186C0%29%20USER32.dll.SendMessageW%0D%0A%2800212618%29%20Vcl%3A%3AControls%3A%3ASendAppMessage%0D%0A%28001DBD36%29%20Vcl%3A%3AForms%3A%3A_16777%0D%0A%28001DBDB4%29%20Vcl%3A%3AForms%3A%3ATCustomForm%3A%3AUpdateActions

Status: not_matched

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.