Have you tried deleting the Facebook app while hooked up to iTunes? I haven't tried that yet, but that's the only thing I can think of atm.
FWIW, this thread on Facebook makes this look like a known problem. Rebooting the iPhone after a failed installation seems to help some people, but not others.
Delete from iTunes, try rebooting
Have you tried deleting the Facebook app while hooked up to iTunes? I haven't tried that yet, but that's the only thing I can think of atm.
FWIW, this thread on Facebook makes this look like a known problem. Rebooting the iPhone after a failed installation seems to help some people, but not others.