Backup error

WHEN WE ARE TAKING BACK UP THIS ERROR CAME.

SYSTEM.IO.FILENOTFOUNDEXCEPTION: COULD NOT FIND FILE
"C\USERS\SEPLD\APPDATA\LOCAL\TEMP\980562FE-FDD0-47CA-95C1-98668F4E89A3.MANAGER

KINDLY ADVICE HOW CAN WE GETTING BAKUP.

DILIP PATEL - +91

9426042954

What version are you using? This used to be a bug but has been fixed some time ago.