Cache building but not being served

Hi, can you help?

It appears that the cache is being built, because I can see files appearing in:
/wp-content/cache/all

But when you load these pages they don’t appear to coming from the cache (they don’t have the cache comment at the bottom).

In addition, Yslow is telling me that static files have no far-future expiration date despite the plugin adding the expires content to my .htaccess.

Thanks for your help!

Site: http://webwise.co.nz/go/ss

Here is the .htaccess

# BEGIN LBCWpFastestCache
<FilesMatch "\.(ico|pdf|flv|jpg|jpeg|png|gif|js|css|swf|x-html|css|xml|js|woff|ttf|svg|eot)(\.gz)?$">
<IfModule mod_expires.so>
ExpiresActive On
ExpiresDefault A0
ExpiresByType image/gif A2592000
ExpiresByType image/png A2592000
ExpiresByType image/jpg A2592000
ExpiresByType image/jpeg A2592000
ExpiresByType image/ico A2592000
ExpiresByType text/css A2592000
ExpiresByType text/javascript A2592000
</IfModule>
<IfModule mod_headers.c>
Header set Expires "max-age=2592000, public"
Header unset ETag
</IfModule>
FileETag None
</FilesMatch>
# END LBCWpFastestCache
# BEGIN GzipWpFastestCache
<IfModule mod_deflate.c>
AddOutputFilterByType DEFLATE text/plain
AddOutputFilterByType DEFLATE text/html
AddOutputFilterByType DEFLATE text/xml
AddOutputFilterByType DEFLATE text/css
AddOutputFilterByType DEFLATE application/xml
AddOutputFilterByType DEFLATE application/xhtml+xml
AddOutputFilterByType DEFLATE application/rss+xml
AddOutputFilterByType DEFLATE application/javascript
AddOutputFilterByType DEFLATE application/x-javascript
</IfModule>
# END GzipWpFastestCache
# BEGIN WpFastestCache
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
AddDefaultCharset UTF-8
RewriteCond %{HTTP_HOST} !^www\.
RewriteCond %{REQUEST_URI} !^/wp-login.php
RewriteCond %{REQUEST_URI} !^/wp-admin
RewriteCond %{REQUEST_URI} !^/wp-content
RewriteRule ^(.*)$ http://www.%{HTTP_HOST}/$1 [R=301,L]
RewriteCond %{REQUEST_METHOD} !POST
RewriteCond %{QUERY_STRING} !.*=.*
RewriteCond %{HTTP:Cookie} !^.*(comment_author_|wordpress_logged_in|wp-postpass_).*$
RewriteCond %{HTTP:X-Wap-Profile} !^[a-z0-9\"]+ [NC]
RewriteCond %{HTTP:Profile} !^[a-z0-9\"]+ [NC]
RewriteCond %{DOCUMENT_ROOT}//wp-content/cache/all//$1/index.html -f
RewriteRule ^(.*) "//wp-content/cache/all//$1/index.html" [L]
</IfModule>
# END WpFastestCache
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
# END WordPress
php_value memory_limit 64M

https://wordpress.org/plugins/wp-fastest-cache/