Are you sure the column is named "ManPermalink" in the productmanufacturers table and DownloadManufacturer in the download table? And that the values are set correctly in the tables and match?
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.