Facebook OAuthException when posting to Wall for a Page
I integrate Facebook posting with a few different websites and services, so I've gotten to know Facebook's Open Graph and API pretty well over the past few years. A lot of sites I work with automatically post new stories straight to a Facebook Page's wall, and have a format with a message and an attached link. All of these parameters are well documented in Facebook's API under Post.
However, lately I've been getting the following error message whenever a site uses the first method below to send a post with a link attached:
{
"message" : "An unknown error has occurred.",
"type" : "OAuthException",
"code" : 1
}
I tried using the Open Graph Explorer, the official Facebook SDK for PHP, and other methods to see if there was any other way to get around that exception, but nothing I did turned out any different response.