Facebook autopost problem

I have been having problems with getting the Facebook autopost to work. I have gone back over the settings, reauthorised, deleted an app and made a new one. But when I go to try to save a post I get the following message: (#200) The user hasn't authorized the application to perform this action. If I remove untick the autopost to Facebook the post will be saved. I've done this 3 or 4 times before and never had this problem before. Can you tell me where I'm going wrong?

Update After reading through the forum here I found your fix file provided to other members and uploaded it. I believe I now have the autopost for Facebook working. Took half the afternoon but it has just been one of those days! I did not know that you could overheat a microwave but apparently you can ...