Xceed error: Index was outside the bounds of the array

Hi. Please can you let me know how to overcome this error:

9:00:53 PM : ERROR: Failed to backup “xxxxxxx” database with “Full” backup type: An unexpected internal failure occurred in the FileSystem component, or one of its descendants. Type: Xceed.Zip.ZipArchive FullName: > Index was outside the bounds of the array

Hi SMART,

To investigate this case we need more details. Could you please provide us with your Advanced Log How to send Log to developers | SQLBackupAndFTP's blog

Please let us know when the log will be sent, also please provide us with your Application ID (“Help” > “About”).

Sorry for the inconvenience.