I realise that DJBlu isn't supporting it just yet, but did you try this out? I built a new HTPC client this week so I went for Windows 8 to save the hassle of doing a reinstall/upgrade in the future. It would be really nice to get the plugin working.
I can't edit my post, but the client is working fine on Win8 with standard 1.2.3 - the problem was with my Server PC
I'm just busy finishing the Usals support at the minute so there will be a slight delay on the new Sky EPG grabber.
Is the update purely for Usals support, or will there be other new features in the update? Will it just be for MePo 1.3?