hello d2burnett, tryp to press windows-key+R and open ''%appdata%\Mozilla\Firefox\'' - in there rename the file named profiles.ini to something like oldprofiles.ini...

Are there still profile folders present in that location? *C:\Users\<user>\AppData\Roaming\Mozilla\Firefox\Profiles\ Note that the "AppData" folder in Windows Vista and later Window 7+ versions and the "Application Data" folder in XP/Win2K are hidden folders. *http://kb.mozillazine.org/Show_hidden_files_and_folders You can use one of these to make Firefox create/use a new default profile: *Delete the profiles.ini file to force Firefox to create a new default profile *Use the Profile Manager to create a new profile *Use "Choose Folder" when crating a new profile to recover an existing profile if there is still one present *http://kb.mozillazine.org/Profile_Manager *https://support.mozilla.org/kb/Managing+profiles *http://kb.mozillazine.org/Profile_folder_-_Firefox