The Dreamweaver CC folder should be created when you install Dreamweaver CC, if this folder does not exist, it sounds like the Dreamweaver CC Installation did not complete correctly.
Have you installed the deprecated server behaviors extension?
http://www.webassist.com/tutorials/Server-behaviors-for-Dreamweaver-Creative-Cloud
do you get the same error installing the Adobe extension?
If so, you should contact Adobe support for help.