I got the error message after I was asked to add to my calendar [I don't use google]. see attached
   Now when I log on to Thunderbird, I get message #1. If I dismiss it I get Message #3. If I click details in message #1, I get message #2, then I will get message #3 again when I try to clear. Also every 15 minutes after I log on to Thunderbird I get the little beep and another round of Message #1 and #3 dismiss starts all over again. It goes on for hours. 
    First I contacted Open table and they determined that it's not being caused by Open Table.

    I have deleted Thunderbird and re-established it. It didn't help. I tried the calendar date reset, but that's not my system so didn't work. 

THE ORIGINAL request is below, it's difficult to read what Mozilla posted This has been going on since early October. Now the errors keep stacking up as I book new Open Table Reservations. I got the error message after I was asked to add to my calendar [I don't use google]. see attached Now when I log on to Thunderbird, I get message #1. If I dismiss it I get Message #3. If I click details in message #1, I get message #2, then I will get message #3 again when I try to clear. Also every 15 minutes after I log on to Thunderbird I get the little beep and another round of Message #1 and #3 dismiss starts all over again. It goes on for hours. First I contacted Open table and they determined that it's not being caused by Open Table. Then I found the error message #2147500037 on Thunderbird's platform so it's a thunderbird error. I have deleted Thunderbird and re-established it. It didn't help. I tried the calendar date reset, but that's not my system so didn't work. Edward Rowan ER.Irish2@gmail.com