OK, glad to hear this is working.
perhaps the problem was due to file permissions, the thumb nail files may have had permissions set that where preventing them from being displayed in the browser.
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.