Here is the link to the FF page where I check my plugins. However, I know the installation must have failed because when I go to FireFox check plugins, FF indicates that my Adobe Reader plugin is vulnerable ('Status') and says under 'Action' that I should update it now. I go through all the steps listed on the help menu, and at the end of the installation, says that the installation was successful. I have gone to Adobe's website: and tried to update Adobe Reader DC while following all the instructions on the help menu. I'm unable to update Adobe Reader v 11.0.10 to the latest version on Mac OS X 10.8.5.