XMBC newbie

Hi Every one I'm new to this.

I have downloaded the latest version on XMBC from the official site.

but it keeps saying i have no internet connection.

and this error keeps pooping up when i open XMBC

"Script fail Script.common,plugin.cache"

the whether app also doesn’t work

I also cannot Debugging log as not even that will work

any idea I have also un-installed and reinstalled