Gave error on every pdf everywhere. Disabled it. Rated 1 out of 5 stars

I seriously jumped for joy today when I realized I could disable it. There don't seem to be any forums explaining to me why my pdfs were giving the error... which I'd like to know... except that I can't recall any pdfs anywhere on the entire internet ever opening without the error - once the viewer started running. ALSO... it would be REALLY nice if it said somewhere that it was a Firefox viewer. I had no idea. (I wish I could give it zero stars - seems odd that that is not possible.)

This review is for a previous version of the add-on (