Can't retrieve POP3 message ERR No such blob

getting error "Can’t retrieve messages ERR No such blob
started about an hour ago, I frequently get can’t retrieve messages, but this one is different, they normally only last a few minutes

I am getting mails thru IncrediMAIL  (I started that account to be able to get messages whenever EM fails, used to happen frequently, not so much now until today)
I am using windows 10 64bit, EM ver 6.0.24928.0

last log:
12:45:05 PM   MailExceptions.OperationException: Can’t retrieve POP3 message due to the following reason:
12:45:05 PM     “-ERR No such blob: mailbox=37712, item=1167240, change=8928436”
12:45:05 PM    at MailClient.Pop3.Pop3ReceiveCommand.Execute(WorkerStatus status)
12:45:05 PM    at MailClient.Commands.Command.Process(WorkerStatus status)

I checked IncrediMAIL right after that error and am still receiving mail thru it