Copy to zip: unknown error 87

[veds]

I select some files press F5 and enter in the dialog box the path to an existing zip file.
Exceptionally I get a dialog box with the error message "unknown error 87".
If I try to add those files to the same zip file with another tool I get no error message.

What could be the reason for the "unknown error 87"?

MC (x64) v13.5 on windows 10

[Mathias (Author)]

87 = generic invalid parameters error code message from Windows.
It can be anything Check log (Ctrl+L for more error info)

Try the other method I wrote in your other post..  Browse inside zip in target panel. and then go to source panel and copy from there.
If you just edit target path it is easy to miss enter the path so it is not added.