@lwang
[Updated] Don't worry. This issue is specific to Mac. Just open your license.properties file in text editor and copy paste the license.customer.name and license.downloadID values in to the dialog box and submit.
If still not working copy the license.customer.name and license.downloadID values and delete the license.properties and then try to give values in dialog dox(no need of server restart). A new license.properties file will be created and you will be directed to login page.

