Originally Posted by
DrByte
Your server is apparently configured to disallow the instructions in your /includes/.htaccess file which are intended to prevent would-be hackers/lurkers from snooping around your site.
If you temporarily rename the /includes/.htaccess to htaccess_OFF then you'll likely find that your images and stylesheets show properly again.
Then you'll need to work with your host to find an alternate way of protecting your files. Your host will know why they've prevented you from controlling the security, and should be able to direct you how to do things otherwise.
Bookmarks