make sure that the WA_DigitalFilePro/jquery-blockui-formprocessing.js file is uploaded to the server.
if your still having troubles, try testing in fire fox, then go to Tools -> Error Console. Does firefox show any javascript errors?
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.