what does this mean?
Checking file hashes for corrupt or mismatched files
[Checksum failed] /core/templates/frontpage_main.tpl did not match, possibly corrupt or out of date
[Checksum failed] /core/templates/pilot_public_profile.tpl did not match, possibly corrupt or out of date
[Checksum failed] /core/codon.config.php did not match, possibly corrupt or out of date
[Checksum failed] /admin/templates/pilots_details.tpl did not match, possibly corrupt or out of date