I’ve got the same problem. Turned off all other programs, then the plugin complains about itself!
Please provide the following information about your installation:
* Wordbook: 0.16.3
* Facebook PHP API: PHP5
* JSON library: PHP
* SimpleXML library: PHP
* WordPress: 3.0.3
* PHP: 5.2.12
* MySQL: 5.0.89
Some other Facebook-related plugin has out-of-date facebook-platform libraries that are interfering with Wordbook (missing methods: profile_setFBML, stream_publish, users_getLoggedInUser, users_getInfo, users_hasAppPermission, auth_getSession). Deactivate each plugin one by one until this conflict goes away, then please contact that plugin’s author for an update. Active Plugins:
* Wordbook (0.16.3)