Inherited ACL bug resulting in Finder Error -41
OS X Snow Leopard has an ongoing bug when handling inherited Access Control Lists (ACLs) for files, which results in an Error -41 message in the Finder when copying files. As outlined on the tech blog Brunerd, the error happens because the Finder applies numerous copies of inherited ACLs to a file when that file is copied into or within a directory hierarchy that has inherited ACLs in the directory structure.
ACLs are elaborate file permissions rules. In OS X when you get information on a file you can see a list of users and combinations of "read" … Read more