Rated 5 out of 5 stars

here is the screenshot:
http://i.minus.com/iYfEwmn6Kl8S5.png
http://i.minus.com/i6hScvUkSDzyu.png
I enter them and press ENTER,but nothing happens. And about:config will be loaded from google search as a instant preview.

This review is for a previous version of the add-on (3.0).  This user has other reviews of this add-on.

Thanks for the screenshots, I found the issue, it seems that the instant preview everything is conflicting. If you turn that off, you will be easily able to go to any about page.
I'll fix this in the next release within hours..