I've followed all the instructions and it seems to crawl OK etc but in my fast search center when i do a search I get the following error in the core search results Web Part:
Unable to display this Web Part. To troubleshoot the problem, open this Web page in a Microsoft SharePoint Foundation-compatible HTML editor such as Microsoft SharePoint Designer. If the problem persists, contact your Web server administrator.
I can't see anything useful in the SharePoint logs either at this stage.