Folder permissions preventing installation

In the process of installing, I am prompted that certain folders have to be set to 766 for permission, like the cache folder and its subdirectories. But the subdirectories. But the subdirectories have not been created at that point of time. So I created them and set the permissions, but after that the page is blank and I cannot continue installing. What should I do?

Hi Claris,

The folder permissions should be
755 for all

775 for the following (and contents) cache custom modules themes data upload config_override.php

also have you checked the error logs ?