The phpCalendar administration screen now displays "File Security Status" for calendar.php, config.inc.php and license.php. After clicking on the help button, it's suggested that I set the file permissions to 644 ... They are already 644 and I'm getting a red Not Secure.
I only noticed this today after upgrading to 6.3.18.
I can't set the permissions to 444 on our server. There is no error when I use CHMOD to 444 but listing it afterwards, it still reads 644 and the message remains Not Secure.
I'm having the same problem. I've even changed my files to "444", and it still shows "Not secure" in the Setup Manager. I have viewed this in two different web browsers and both say "Not Secure" for those three files.