Or….
Update that database entry.
'376', 'facebook_application', 'a:2:{s:6:\"app_id\";s:XXXX:\"YOUR APP ID\";s:10:\"app_secret\";s:YYYY:\"YOUR SECRET\";}', 'yes'
XXXX= the length of your app ID (mine was 15)
YYYY= the length of your app secret (mine was 32)
Joe, uninstall the latest one and try it with 1.3. I had the same issue with 1.4. I downloaded 1.3, saved the settings fine, then upgraded to 1.4 without anymore issues.
http://downloads.wp.xz.cn/plugin/facebook.1.3.zip
Just a note…don’t go back to that page and change the values, or hit save. It will wipe the values again.
