Migrated from a NW6SP2 cluster to a 6.5 server this weekend. Some files did
not get backed up, hence they did not restore.

When I tried a manual copy, they gave the "cannot read from source" error.
I cannot open the files either.

So, it is what it is..but can someone tell me how these files got corrupted
or, is this a result of early NSS experiments?

Any well-reasoned and insightful ideas welcome.