>I sent a private message to a selected member. I did Preview and then Send. Then a messagebox came, saying that I should select a member. To be sure, I did the procedure once more. Again I got the same message. Now I feel unsure. Has the member received my message(s)? How can I check?

Can you tell me which approach you took to create the message? Was it by the top toolbar private message icon, from the list of online users or by any other approach?