Hi all,

I'm having trouble getting my site to instruct browsers and intermediary servers to cache all images in certain directories for some time. I tried using the directive shown below in .htaccess files in the directories in question but this caused all images stopped loading altogether. I fired up my packet sniffer and it appears the server is returning a 500 Internal Server Error in reply to the image requests.

Can anyone help explain to me why this isn't working? Or know of a better way to achieve caching of all images in a directory? (I would hate to have to serve every image via .php code though).

# cache 1 month
<FilesMatch "\.(jpg|jpeg|png|gif|swf)$">
Header set Cache-Control "max-age=2419200, public"
</FilesMatch>

Thanks very much,
Gavin