Adobe Third Party Installer
I found a workaround for this issue. Go to the following website and follow instructions to install third party extensions:
https://helpx.adobe.com/creative-cloud/kb/installingextensionsandaddons.html
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.