Sharepoint backup failure

Hi,

The backup is failing with the following error:

Job ended: Friday, September 19, 2014 at 6:37:58 AM

Completed status: Failed

Final error: 0xe000fe49 - An invalid parameter was specified.

Final error category: Job Errors

For additional information regarding this error refer to link V-79-57344-65097

V-79-57344-33899 - The resource could not be backed up because an error occurred while connecting to the Agent for Windows. The correct version of the Agent for Windows must be running on the target computer.

How could this issue be solved?

Thank you,