Why is this?

[ojaiclassifieds]

Your OSClass installation can not be auto-upgraded. Files and folders need to be writable. You could apply 644 permissions via SSH with the command "chmod -R 644 *" (without quotes) or via a FTP client, it depends on the program so we can not provide more information. You could also upgrade OSClass downloading the upgrade package, unzip it and replace the files on your server with the ones on the package.

[Juan Ramón]

It seems that you cannot auto-update your installation. However, that message is wrong because the required permissions to update automatically the version are 777.

[ojaiclassifieds]

What files and folders need to be writable?

[Juan Ramón]

All the files and folders.

[Jesse]

I've had issues with this as well, where the auto-update no longer works after a manual update has been done. I took a look at another OSClass installation which I did auto-upgrade. I checked the file permissions for those.... all folders were 775 and files were 644.

So, I figured if I applied to same CHMOD changes to my "manual" installation of 2.3.1, the auto-upgrade would once again work. Nope. Then I took your advice Juan and changed every single file and folder to 0777. Still does not work, and that does not make any sense to me.

It is worth noting that I'm using both a Windows 7 and Windows XP computer, neither of which preserve file permission settings during manual site updates, hence why I believe this problem occurs in the first place.