Issue with Facebook Open Graph

Hi there

I’ve just launched a new site at http://www.essential-bali.com using the Tresor theme by Orange. I’m having issues when people are sharing to Facebook – individual posts weren’t pulling in pictures although that seems to have remedied itself on most posts now.

But when anyone tries to share the homepage there’s just a blank image that I think is being pulled in from the theme. The debugger says:
nferred Property The ‘og:url’ property should be explicitly provided, even if a value can be inferred from other tags.
Inferred Property The ‘og:title’ property should be explicitly provided, even if a value can be inferred from other tags.

I tried a couple of plug-ins that are supposed to fix this kind of thing but they just caused a conflict. The theme developers are on holiday and I need to fix it ASAP so any clues would be gratefully received.

Thanks
Paul