Thread:Help talk:Installation/Re: Warning: Class '…' not found in …/reply

You should not get those dependencies (ie Validator and DataValues) yourself. If you use Composer, they will be installed for you, and you will not have to load them. In case you use the 1.9 tarball, they are included in SMW in the tarball, and loaded by SMW, so again you do not need to load them yourself.