Unexpected end of file has occurred

Testing eM client 7.1.3 to potentially replace Outlook. Have an issue with one Exchange mailbox. Operations: “an error occurred. MailClient.Storage.Application.OperationException: Synchronizing folder ‘xxxxx/Inbox/’ failed due to the following error: Unexpected end of file has occurred. The following elements are not closed: t:Body, t:Message, m:Items, m:GetItemResponseMessage, m:ResponseMessages, m:GetItemResponse, s:Body, s:Envelope. Line 16, position 290959. —> System.Xml.XmlException: Unexpected end of file has occurred. The following elements are not closed: t:Body, t:Message, m:Items, m:GetItemResponseMessage, m:ResponseMessages, m:GetItemResponse, s:Body, s:Envelope. Line 16, position 290959.” have run repair (cache) also removing and adding mailbox back to client. Same mailbox opens fine in Outlook.

I also get this problem, did you find a solution?