Hello,
I uninstalled CSS Menu Writer (latest version) and then uninstalled Design Extender.
Next, I reinstalled Design Extender.
However, I still see three other error messages.
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.