After installing the Ad Block Extension, then deinstalling it in the\nAd Block options, Firefox closes on its own. When I then load Firefox\nagain, then click extensions, I get the hourglass icon but the\nextensions window wont open. I try reinstalling Ad Block but it won't.\nHow can I get the extensions window to open again. Thanks. I am not of\nthe computer generation so please make your reply easy to follow. I\nwant to get all traces of Ad Block out of Firefox.