Make sure you are installing the latest CC version .zxp file from our web site. If you are, then that message can be ignored and just click "install anyway" and it should work.
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.