Features local permission issue Warning: mkdir(): Permission denied in features_export_build_form_submit()
The point is that your folder needs to runs under the _www group (www-data is the group and user for linux machine). You can do it within a terminal or with the finder too.
So find the webserver root folder (~/Sites/MYDRUPALSITES, for example) and pull up the Finder Get Info window.

Then on the bottom left corner, click the group icon (The picture with 2 people) and then hold Option then click the “+” button. This will allow you to select system users and groups. Find the World Wide Web group, select that and change the group priviledge to “Read &amp; Write” and then use the cog-wheel to “Apply to enclosed items…”

Or just run the following chgrp (change group) command via Terminal : easiest way (y) !

cd ~/Sites

sudo chgrp -R _www MYDRUPALSITES/




That's the most revelant answer I can answer with your question. But it can also be the owner or a bad installation permissions set. Simple google : permission issue mamp/xammp. Or you could also run

sudo chmod 777 -R MYDRUPALSITES/


But I clearly do not recommend it on a online production (in local it's "acceptable").