Yesterday morning everything was fine, I could send emails perfectly. Sometime in the afternoon, I responded to an email, and when I went to hit the 'send' button...there was none. The entire task bar had disappeared. I can reply, but not send. I even tried to download Thunderbird again and still nothing. What did I do that made the bar disappear and how do I get it back? I don't recall doing anything differently. Help!!! my emails are piling up waiting for replies. Thank you.