Unity 2017 Mac not showing login screen

I signed out of Unity and was trying to sign back in because the Asset store said that my session was too old to complete a checkout. When I tried to login, this is the screen I got. I had no problems with Unity 5.4.3 before the 2017 update.

Things i’ve tried:
1.) Reinstalling Unity 2017
2.) Deleting license files from Library/Application Support/Unity/*
3.) Restarting Mac

Version info
1.) Mac Book Pro running El Capitan
2.) Unity 2017

Anyone else run into this problem and was able to solve it?

Hi @jangooni facing the same problem here,I quit the Unity like five time to start again , approximately on my sixth attempt it worked, please reply if you have found a better workaround.