<p>Turnoff the popup in Safari. Firefox has been incompatible for me on Common App. I guess Common App needs to be fixed to cooperate better with other browsers.</p>
<p>Well for some reason, whenever I use Firefox to sign on Common App, I get "a fatal error has occured" or something like that. I tried using an older version of Firefox but same thing happened.</p>
<p>Yes I had the same exact problem and when I read the title of the thread I thought "well that person must be using Safari......" sure enough.... hahaha</p>
<p>I just used firefox and when I got that notification that a popup had been blocked, it hit me that that's what the problem was</p>