After you have uploaded them using the paper clip icon while editing the post, did you use the paper clip icon again to select the uploaded image to then attach it? The tutorial below is the same method used here that may help.
ohh thanks brink..
I was having as other formats.. which is not in the list.. just thinking that we can recommend the forum to update the list of the formats and enble other fromats as well.. or just make that more simple and enble us to paste the pictures directly on the message box..