I installed using the installer. When I go to CSSKetch ->Layout Layers <img width="697" alt="screen shot 2016-10-13 at 11 14 14 pm" src="https://cloud.githubusercontent.com/assets/5486268/19374521/3e4a234a-919a-11e6-8d49-9a07581fed5f.png"> when I select the .css file it keeps poping up the select window same when i go to CSSKetch -> Set Pages Styles I am on Sierra