using anaconda in pycharm

I have a mac - installed pycharm - installed anacondo 

when I go to try and create a new project and select 'Conda' it says 'environment location directory is not empty'? 

any ideas what I have done wrong? 

I saw one post saying delete what's in the directory but I can't seem to navigate to the '.conda' file as it's not in my file explorer? 

thanks