[Plugin: WP-FB-comments] FB Admin Page token is missing

excerpt from https://developers.facebook.com/docs/reference/api/permissions/:

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Page access_token

An access_token used to manage a page. This is used when you want to perform an operation acting as a Page. This access token is retrieved by issuing an HTTP GET to /USER_ID/accounts or to /PAGE_ID?fields=access_token with the manage_pages permission. Getting /USER_ID/accounts will return a list of Pages (including app profile pages) to which the user has administrative access in addition to an access_token for each Page. Alternatively, you can get a page access token for a single, specific, page by issuing an HTTP GET to /PAGE_ID?fields=access_token with the manage_pages permission (you must ask for the access_token field specifically via the fields= parameter). See the documentation for the Page object for more information. NOTE: After September 22, 2011, manage_pages permission will be required for all access to a user’s pages via this connection, i.e. for both reading the user’s pages and also retrieving access_tokens for those pages. See the documentation for the User object for more information.
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