Please note that pressing the F9 key (file permissions) on a file on a remote host (SCP connection) a dialog window appears. The field Owner is filled with the value from the main panel, but, unfortunatelly, if owner's name is long enought, it is truncated.
It results in error, if you wish to press F9, change e.g. r/w rights, and press OK. To avoid the error, you must put down full owner's name in the field Owner.
Could the WinSCP program not truncate such things as owner ???