ERROR: This endpoint has
been deprecated. To temporarily reenable it, you may disable the
"august_2012" platform migration. It will be disabled permanently on
August 1, 2012.
The above message is currently seen by most Facebook applications for web, iOs and mobile. The first time I encountered this error was before August 1 and ignored it. From my findings every Facebook application has migration settings which can be enabled/disabled for particular months (August, September, October..) and get permanently disabled on the first day of the present month. Aug 2nd, I encountered that same problem and there was no way I could use my Facebook application, but with this unique url you can still use your application.
All you do is get your app id and add it to the url --> http://www.facebook.com/dialog/feed?_path=feed&app_id=Your App Id&&redirect_uri=https://www.facebook.com&display=popup