Not being able to see the Facebook button is a known bug, it’s not enough to simply logout because the plugin somehow considers you as still being logged in (cookie?) and refuses to appear, you need to use a different browser, one that you have never used to login to your BP site.
You gotta modify the settings via notepad… 
You gotta modify the settings (api number etc…) via notepad… and then upload it.
i’ve found the facebook CONNECT settings (grrr i dont’feel in love with the new MU),’ive inserted api and secret key but i receive:
Fatal error: Uncaught exception ‘FacebookRestClientException’ with message ‘Template bundles must include at least one one line story template.’ in C:xampphtdocsmuwp-contentpluginsbp-fbconnectwp-facebookconnectfacebook-clientfacebookapi_php5_restlib.php:1857 Stack trace: #0 C:xampphtdocsmuwp-contentpluginsbp-fbconnectwp-facebookconnectfacebook-clientfacebookapi_php5_restlib.php(414): FacebookRestClient->call_method(‘facebook.feed.r…’, Array) #1 C:xampphtdocsmuwp-contentpluginsbp-fbconnectwp-facebookconnectfbconnect.php(567): FacebookRestClient->feed_registerTemplateBundle(NULL, NULL, NULL, NULL) #2 C:xampphtdocsmuwp-contentpluginsbp-fbconnectwp-facebookconnectfbconnect.php(262): fbc_register_templates(false) #3 C:xampphtdocsmuwp-includesplugin.php(339): fbc_admin_options(”) #4 C:xampphtdocsmuwp-adminadmin.php(75): do_action(‘fbc_admin_optio…’, Array) #5 C:xampphtdocsmuwp-adminoptions-general.php(10): require_once(‘C:xampphtdocs…’) #6 {main} thrown in C:xampphtdocsmuwp-contentpluginsbp-fbconnectwp-facebookconnectfacebook-clientfacebookapi_php5_restlib.php on line 1857
i’m using the latest mu and bp trunk…it’s a problem if i’m testing it locally and not online?
