Within Gallery I view a picture, select it and then choose the Hangout icon at the top to send it via Hangouts. When I'm navigated to Hangouts the dialog box where I would type a message reads: Sending disabled. I cannot type a message and the Send button is disabled. Also above the Send button it reads MMS. However I CAN send the picture directly from the Hangouts app by 'attaching' it. Any reason for the different processes? Thanks!