Hmm, didn't think of that
But I'm just wondering if they installed the wrong version by accident.
The link in the thread goes to the main download page and the big 'DOWNLOAD' button does not link to the latest version of plus, the small "here" link does.
Ensure that they ues this link:
http://mirror2.msgpluslive.net/MsgPlusLive-479.exe
to download it