It could have something to do with the version of Safari that you have installed. My version is 4.0.3 (5531.9), what's your version?
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.