Been messing with this for sometime and think I have the answer.
Mind you all that Most of these Social sites are not real user friendly and Facebook especially is the worst.
Pretty soon nobody will be able to see your posts even if you get to post what you want.
We have about 2% of our friends getting posts in our stream, verified by 3 other people.
ANYWAY enough ranting, To get images/attachments to show.
I went into Attachment Settings - Allow/Deny list: and clicked Allow.
Supposedly this is for when Secure Downloads are not enabled.
But for me by clicking on Allow attachments are posting fine.
Don't know but it's working