Upgrade to the recent version (29.0.1).

Updating to Firefox 29 is not possible in this case because current Firefox versions need OS X 10.6 or later. *https://support.mozilla.org/kb/firefox-no-longer-works-mac-os-x-10-5 Last Firefox for Mac OS X 10.5: *http://ftp.mozilla.org/pub/mozilla.org/firefox/releases/16.0.2/mac/ Another option to consider is to install the last Firefox 10.0.x ESR version as that version is more recent than the Firefox 16.0.2 version. *https://ftp.mozilla.org/pub/mozilla.org/firefox/releases/10.0.12esr/ *http://www.mozilla.org/en-US/firefox/10.0.12/system-requirements/ ---- What kind of issue(s) do you have that you want to reset Firefox? You only see the reset button on the "Help > Troubleshooting Information" page if you use the profile that is marked as Default=1 in the profiles.ini file. If you do not have the "Reset" button then either use the Profile Manager to create a new profile or use the Profile Manager to start with the current default profile to get the reset button in Firefox. Create a new profile as a test to check if your current profile is causing the problem. See "Creating a profile": *https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles *http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues If the new profile works then you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over the problem *http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

Helloooo!!! Did you read my original message. UPGRADE NOT POSSIBLE DUE TO INCOMPATIBILITY!!!! But alas, I found my own solution through a change in the coding of my files. Mozilla should hang for screwing things up like this constantly.