[Paul Wong-Gibbs]

Could check to see if XMLRPC is working on your server. Download http://ourcommoninterest.org/downloads/xmlrpc-sayhello.zip which Burtadsit wrote.

And to steal some words from Lance Willett:

The test consists of two files. The first file is a bbPress plugin that you activate in the bbPress plugins area that acts as a XML-RPC server and responds to a simple “say hello” type call. The second file goes in the root of your MU setup.

This test bypasses all the “bbpress_live/discover_pingback_server_uri()” stuff that might be giving you problems. If this works then the issue is most likely in that area and could be a host/server problem.

To load the test, first install the “oci-bb-sayhello.php” file to your bbPress install root in a folder called “my-plugins” (create the folder if it doesn’t exist). Then log into bbPress and activate the plugin. Next, drop the “oci-bp-sayhello.php” file into the root of our MU install so that you can navigate to it easily. Then load “your-site/oci-bp-sayhello.php” in a browser and see what the output is.