On some albums, when I set new right, After I see the pop-up "rights have been set my lord" the page is refreshed and the check box for the user rights get unchecked.
I doubled check and the www-data user can write the .right.xml file in the folder which plants the issue...
But the pop-up stills appears even when the content of .rights.xml has not been changed (but the mtime get updated).
I noticed the same issue. It's the first time i use PhotoShow, and i can't set permissions on the only one directory present on my configuration. On my side, .rights.xml is not created.www-data has the permission to write (i can create dir, upload some photos..).
It was working before :/
Confirmed, thanks for this, and thanks for PhotoShow, great job.