This may already be posted somewhere but I thought I'd mention it in case anyone else runs into this problem:
Apparently if you already have a user account on the system (created outside DirectAdmin) and try to restore that same username from a backup it will fail with "Unable to read the User data files for <username>".
After deleting the user from the system with deluser and removing the user's home directory (just in case) the backup restored successfully.
Apparently if you already have a user account on the system (created outside DirectAdmin) and try to restore that same username from a backup it will fail with "Unable to read the User data files for <username>".
After deleting the user from the system with deluser and removing the user's home directory (just in case) the backup restored successfully.