I have been trying to test an upgrade and for the life of me I can't get it to install.
I keep getting the error about the data folder is not writable. I've tried running both the installer.php and the upgrade.php
I've tried upgrading over a backup install from production and also just a vanilla install with a new database etc.
chmod the data folder to both 777 and 755. I'm at a loss as to what else to try.
Any ideas?