I just updated my site from 7.10 to 7.22 and now I am getting a Access Denied error on images that i'm uploading. My files folder is already 777 and everything else in there. Anyone know how to resolve this issue or what is causing it exactly?
I added the following into my settings.php file:
$conf['image_allow_insecure_derivatives'] = TRUE;
It got the images access denied error fixed, but this leaves your site insecure and undoes what it was suppose to secure.