I upgraded to WordPress 3.8 and looking around I opened "Apearance --> Customize" and then hit "Close" without making any changes. Now my website is down and I can’t access wp-admin. When I try either I get; {"success":"-1","alert":"Cannot write style-custom.css file, you may try setting the style-custom.css file permission to 755 or 777 to solved this. ( If file does not exists, you have to create it yourself )"} I found that I have four themes listed in; /var/www/wp-content/themes 1) bluediamond-v 1_05 (This is the only one that has the "style-custom.css" file 2) twentyfourteen 3) twentythirteen 4) twentytwelve I changed the existing “style-custom.css” file permissions to 755. I still can't access wp-admin or the website - I continue to get the same alert. Any help is very much appreciated