When I try to drag and drop a screen capture image (png, jpeg) etc into a post it works ok while I am in edit mode. But when I hit Post I get a message saying I am not allowed (don't have permission is how it reads) to post that file type in the forum. Yet I can add the same file types as attachments and then create thumbnail links in the message and such messages post just fine.
In case its relevant I'm using Firefox 18.0.1 on Mac OSX 10.8.2.
In this something that should work or do I simply have to do it as attachments ?