Loading XML files fails with Object reference not set to an instance of an object (57347)

XML files with the following error when dataloaderprocess them
The XML files are moved to the ERROR folder

System.NullReferenceException: Object reference not set to an instance of an object.
at AfterMail.DataLoader.ExclusionRule.CanProcess(IEmail2 objEmail, Guid checkSum)
at AfterMail.DataLoader.Message2.Insert(IEmail2 email, Guid lockedCheckSum, IFolderInfo folderInfo)
at AfterMail.DataLoader.FileLoader.Load(FolderInfo folderInfo)

Messages are being moved to the Error folder because they have no Subject, and an Exclusion Rule specifies a wildcarded Subject.
Message is being moved to the Error folder because it has a To recipient with a Display Name but no Address, and an Exclusion Rule specifies a To recipient.

WORKAROUND
None

STATUS
Waiting for fix in a future release of Archive Manager