Preload Issue

I have WP Super Cache installed on a WordPress site on bitnami (not exactly sure where the issue is) and I’m having issues with the preload not appearing to cache my pages. When a user lands on a page, the page does get cached, but I would like to get the preload working to cut down the initial load time for users. The debug file contains:

14:35:21 20416 / wpsc_get_realpath: directory does not exist - /opt/bitnami/apps/wordpress/htdocs/wp-content/cache/blogs/xx.xxx.xx.xxx/
14:35:21 20416 / wpsc_get_realpath: directory does not exist - /opt/bitnami/apps/wordpress/htdocs/wp-content/cache/blogs/xx.xxx.xx.xxx/meta/
14:35:21 20416 / supercache dir: /opt/bitnami/apps/wordpress/htdocs/wp-content/cache/supercache/xx.xxx.xx.xxx/
14:35:21 20416 / No Super Cache file found for current URL: /opt/bitnami/apps/wordpress/htdocs/wp-content/cache/supercache/xx.xxx.xx.xxx/index.html

It appears the server is being appended. I tried creating the directory and copied the index.html from /supercache/ into /supercache/xx.xxx.xx.xxx and I now get a different error:

17:09:58 21416 / supercache dir: /opt/bitnami/apps/wordpress/htdocs/wp-content/cache/supercache/xx.xxx.xx.xxx/
17:09:58 21416 / wp_cache_get_cookies_values: return:
17:09:58 21416 / Saving headers. Cannot serve a supercache file.

I checked the index.html file and it appears to be empty. Has anyone ran into this or can provide some insight on how to resolve this issue?