Hello,
I have the same problem, but I found the solution. If you install DW CC 2014 on a new cession, it works fine. So, the problem is about the library permissions.
- First, uninstall DW CC 2014
- Go to users/namecession/library/Application support/
- Select the folder Adobe and right clic "Read information"
- Unlock (if needed) the window
- On the bottom of the window select "read write" for all users
- Below, select "apply for all…" in the pop up menu
- Agree the dialog box, close the window
- Make the same operation with the folder users/namecession/library/Preferences
- Then install DW CC 2014
Enjoy !