[gears-users] can't install gears on FF 3.5.2 mac

[kenny]

i uninstalled FF using appzapper, then reinstalled. i get the same
error - there is not even a link on the gears page to download
anything. all the images appear broken. i've gotten this same error
for several weeks now. below is a link to a screenshot of FF on the
gears page. any ideas?
http://yfrog.com/2yscreencapturebp