I wonder what my friend did to his wordpress installation that left it ended up with just a blank display. Can't do anything now as I'm away from my PC. I wonder what he did. Could be a faulty wordpress plugin. Unlikely to be htaccess file misconfiguration. With so many wordpress plugin this could be the fault too.
Finally found out why his Wordpress page disappeared. Nope it wasn't my fault! My Wordpress installation was fine. I found out that one of the plugins was causing havoc to Wordpress. It was just a simple matter of trial and error by activating and deactivating each plugin to find out who was the culprit. Turn out to be one of the three the Photoshelter plugins. Switching it off and the Wordpress homepage reappeared. No problemo. Just don't use that plugin, darling.