System.ArgumentException: An item with the same key has already been added.

My email stopped working.

7:37:18 PM Online state: changed to online due to NetworkAvailability 
7:37:18 PM [POP3]  Connecting: To
7:37:19 PM [POP3]  Connected: To
7:37:20 PM   System.ArgumentException: An item with the same key has already been added.
7:37:20 PM    at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource)
7:37:20 PM    at System.Collections.Generic.Dictionary2.Insert(TKey key, TValue value, Boolean add) 7:37:20 PM    at MailClient.Protocols.Pop3.Pop3Account.CheckUids(IEnumerable1 uidsList)
7:37:20 PM    at MailClient.Protocols.Pop3.Pop3ReceiveCommand.Execute(WorkerStatus status)
7:37:20 PM    at MailClient.Commands.Command.Process(WorkerStatus status)

Hi Dave,

Thank you for reporting this issue which is related to overlapping appearances of a recurring event. We managed to replicate the behaviour so I can confirm it as a bug. Hopefully, it will be fixed in one of the future fixes.