ooops... I was hoping that my screen shot of the error msg would appear when I posted this problem. It reads...
There is a problem with your mailboxes.
Try clicking Quit and opening Mail again. If this message reappears, click Quit and Rebuild index. The next time you open Mail, it will import your messages.
Quit Quit and Rebuild Index
Neither of these options works. I just keep getting the same message every time.