With the latest updates, I can't get a message to send by putting a username in the to field.
For example, if I put warrant63 in the "send to" field, I get this error message, "Your message was not sent. Please enter a username or Friend's name." To send a new message to someone, I have to go to their profile and click on the message icon.
Previous to the latest updates, I could compose new messages by putting the username in the "send to" field.