Wizard Reentry
I had the same problem. do the following and you will be able to see the edit button:
If you working with HTML pages, Dreamweaver must have Scripts set to display under Invisible Elements.
* Edit > Preferences.
* Select Invisible Elements from the Category column.
* Make sure Scripts is checked.
* Click OK.
THEN You will select this script iconscript icon beside your menu to display the CSS Menu Writer Properties inspector.