Poruka greške:
The update could not be installed. Please make sure there are no other copies of Firefox running on your computer, and then restart Firefox to try again.
Kako ispraviti ovu grešku?
1. Logirajte se kao Administrator, pokrenite Firefox i napravite update:
"Help" > "About Firefox" > "Apply"
2. Odlogirajte se, i logirajte se kao korisnik i izbrišite ovaj folder:
C:\Documents and Settings\%korisničko ime%\Local Settings\Application Data\Mozilla\Firefox\Mozilla Firefox (za Windows XP)