Transfer to PureFTP begins but fails at random length of progress. File appears to 'not resume'.
Exception:
Rebex.Net.FtpException: Unknown command (500). at wWGvS.AayBuI.BboyfsZ() at wWGvS.AayBuI.Write(Byte[] buffer, Int32 offset, Int32 count) at wWGvS.bsWOwAZ.Write(Byte[] buffer, Int32 offset, Int32 count) at Rebex.Net.Ftp.bGLizE(String , String , Stream , Int64 , Int64 ) at Rebex.Net.Ftp.bGLizE(String , String , String , Int64 , Int64 , Int64 ) at Rebex.Net.Ftp.PutFile(String localPath, String remotePath) at eBUS.Share.MediaServices.Ftp.Application.Impl.FtpClientBase.DoBasicTransfer(String uri, String localFilePath) at eBUS.Share.MediaServices.Ftp.Application.Impl.FtpClientBase.DoTransfer(String uri, String localFilePath, Boolean tryResume) at eBUS.Share.MediaServices.Ftp.Application.Impl.RebexFtpClient.Upload(FtpDeliveryQueue item, FtpDeliveryFile file, FtpDeliveryProgressDelegate progressDelegate, String& errorDescription)