We are talking about 3.5 version, right?
This one is not working!
Deleted, reinstalled again, remake the twitter app on dev, no changes about “save changes” button. Still unclickable!
Hit the reset button, settings restored to default, but how i can save keys when save changes is not working, how?
Reinstalled 3.0.3 from backup, is working! #sad
#fix
An update is required for fixing on OS X “save changes” button. Manual fix
Remove wordtwit from your host (wp-content) put back the old version 3.0.3 set consumer key, and all the settings that you want, SAVE!
Go to twitter on you account apps, delete the app that you previously granted acces.
Wait 2 minute, refresh, update the plugin to 3.5, go to accounts, and hit add account. Opens the twitter oAuth page, with user and pass. Successfully.
Hope it helps!