Most of time ( BA1460) an error message shows on your machine when you are create BKF as like
An Inconsistency was Encountered in the Requested Backup Files
The main reason behind this issue is system hardware device failure.
Try to restore same BKF files on another storage device. If the same error messages pop up then there are two probabilities
To get rid from such issue, firstly repairs your storage device. There are two ways to repair storage device
After using both techniques if you are still suffering with same trouble then repair sources files too. To repair corrupt BKF sources files you need to take help from any online solution algorithm.