Upgrading to RC3 from version...??

[Cube]

Quote:would this method still work?

No. There where changes in the config-templates (as GOOvER said, but not only in the parts-directory) and other config-changes which are applied only during install (e.g. logrotate). Perhaps there where also changes in the database. Perhaps also your last updates were not complete, because you only updated /var/www/ispcp.
I don't want to discourage you, but I don't think your update will work.