Okay...
I just received a test pm from barb_b, i was able to reply to it. I sent her a new message and it went through. I tried sending a pm to GayleMO and it would not got through. I tried to tell you this info in a message reply to you, and got the error message. When I tried to send a message to Gayle, I did not get an error message. I do not know how to take a screen shot, if you tell me how, I will.