[Q] Can't Restore Nandroid Backup topic

Sorry if this is the wrong place. I have made several nandroid backups using Philz Touch recovery (6.0.4.7 i believe) and my ROM is Negalite Wonderom NG2 v3. All of the backups fail the MD5 check. I have made the backups from both the recovery and an app (online nandroid backup). I looked at the backups using nandroid manager, and the same file causes the backups to fail the md5 check. After re-generating the md5sum using nandroid manager, then immediately checking them via the in-app verify function, the same file (system.ext4.tar.gz.a) fails the check. Why is this, and how can I fix it? Any help would be appreciated.