Caching with Hummingbird

The plugin is not allowing me to enable caching. I switched themes and not the caching no longer works. It is giving me this error.

Browser Caching is not working properly:
- Your server may not have the "expires" module enabled (mod_expires for Apache, ngx_http_headers_module for NGINX)
- Another plugin may be interfering with the configuration

I have checked the plugins and there is nothing that should be affecting the caching.

Here is the htaccess file information as well.

# 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]
</IfModule>

# END WordPress

# DENY ACCESS TO WP-CONFIG
<files wp-config.php>
order allow,deny
deny from all
</files>

# BEGIN WP-HUMMINGBIRD-CACHING
<IfModule mod_expires.c>
ExpiresActive On
ExpiresDefault A0

<FilesMatch "\.(txt|xml|js)$">
ExpiresDefault A691200
</FilesMatch>

<FilesMatch "\.(css)$">
ExpiresDefault A691200
</FilesMatch>

<FilesMatch "\.(flv|ico|pdf|avi|mov|ppt|doc|mp3|wmv|wav|mp4|m4v|ogg|webm|aac)$">
ExpiresDefault A691200
</FilesMatch>

<FilesMatch "\.(jpg|jpeg|png|gif|swf|webp)$">
ExpiresDefault A691200
</FilesMatch>
</IfModule>

<IfModule mod_headers.c>
<FilesMatch "\.(txt|xml|js)$">
Header set Cache-Control "max-age=691200"
</FilesMatch>

<FilesMatch "\.(css)$">
Header set Cache-Control "max-age=691200"
</FilesMatch>

<FilesMatch "\.(flv|ico|pdf|avi|mov|ppt|doc|mp3|wmv|wav|mp4|m4v|ogg|webm|aac)$">
Header set Cache-Control "max-age=691200"
</FilesMatch>

<FilesMatch "\.(jpg|jpeg|png|gif|swf|webp)$">
Header set Cache-Control "max-age=691200"
</FilesMatch>
</IfModule>
# END WP-HUMMINGBIRD-CACHING