I had this same issue but nothing is opening at all after update.
I mean nothing from webassist.
When i click any part of webassist nothing appears.
Also nothing related to webassist appearing on server behaviours.
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.