[dnanian]

In the few other situations we've seen this, Mat, Disk Warrior was able to locate and correct the problem (and Disk Utility wasn't). Of course, I can't guarantee that'll be the case, but it's nearly certain to be a problem with the source drive structure.

Turning off ACL copying might help, if the problem is in an ACL and not some other EA (ACLs are stored as EAs).