New Post: DirectoryNotFoundException?

Hi guys brand new to Html Agility Pack, and not much wiser when it come to c# however; trying to get the fundamentals rolling and fallen at the first hurdle.

        HtmlAgilityPack.HtmlDocument htmlDoc = new HtmlAgilityPack.HtmlDocument();
        htmlDoc.LoadHtml(strHTML);  //Use to load from a string

Trying to load the string its throwing a DirectoryNotFoundException and looking for D:\Source\htmlagilitypack.new\Trunk\HtmlAgilityPack\HTMLDocument.cs

I've had similar problems with sqlite interop I think it was and the advice was dump the pdb file associated with the assembly dll I tried that with this but it just recreates it! Can anybody set my right ?
Thanks