If you have windows and you havent tried this already, you could try removing it using Add or remove programs. OR (this might work with macks too) although a little risky you tried putting every trace (except the unistall files) of BFV into the recyle bin and then emptying it (deleting bfv in the process). If that dont work try altough riskier than alittle risky, you could delete the unistall files too. And then try reinstalling BFV, which if that dont work get a new disk.