Error: "No data is available for encoding 50000" in Event Log for Source DataloaderWorker (61009)

When processing certain messages the file system Data Loader will log the above error in the event log and move the message XML file to the Error folder.

See example below:

Event Type: Error
Event Source: DataloaderWorker
Event Category: None
Event ID: 0
Date: 16/02/2010
Time: 12:00:14
User: N/A
Computer: QAM
Description:
AfterMail.Log.DataLoader
[1749612380-1179854255-15-0x0] Exception has been caught - moving file e:\Quest Software\ArchiveManager\Export\\bd7e933f-a4f0-35cb-052b-0215616e52ae.xml to error folder.
System.NotSupportedException: No data is available for encoding 50000.
at System.Text.Encoding.GetEncodingRare(Int32 codepage)
at System.Text.Encoding.GetEncoding(Int32 codepage)
at AfterMail.EmailObjects.CheckSum2.CalcComplianceCheckSum(IEmail2 email, Boolean trustPurportedCheckSums)
at AfterMail.EmailObjects.CheckSum2.GetComplianceCheckSum(IEmail2 email)
at AfterMail.DataLoader.Message2.InsertMessage(IEmail2 email, CheckSum2 checkSummer, SqlTransaction trans)
at AfterMail.DataLoader.Message2.InsertEmail(IEmail2 email, CheckSum2 checkSummer, SqlConnection conn, Guid lockedCheckSum, Stack`1 loopDetector)
at AfterMail.DataLoader.Message2.InsertEmail(IEmail2 email, CheckSum2 checkSummer, SqlConnection conn, Guid lockedCheckSum)
at AfterMail.DataLoader.Message2.Insert(IEmail2 email, Guid lockedCheckSum, IFolderInfo folderInfo)
at AfterMail.DataLoader.FileLoader.Load(FolderInfo folderInfo)

The message has an invalid codepage value of 50000 so the Data Loader cannot convert the body from the invalid codepage to Unicode when it calculates the compliance checksum.

WORKAROUND
None


STATUS
Waiting for fix in a future release of Archive Manager.