Updated Facebook on Ipod Touch. Not opening!?

[I like bands.]

I updated the Facebook app on my iPod touch and it said in the updates it would now open faster for iPhones.

I updated my apps anyway, but now Facebook will not open.
I will tap it and it takes me back to the homescreen.
I tried deleting and re-installing but it won't work.

Is there anyway you can revert an update, and could this be because i have an iPod not an iPhone?
I tried using safari to go onto facebook but it doesn't show recent notifications ect. and i'd just prefer the app.

How can I fix this?
I have rebooted my iPod and reinstalled the app.
Please help!

[Verbal]

The only way to possibly fix it is to update your iOS firmware if you didnt do that already.

The same happens to me on my iPad 2 (for the last 3 facebook updates this was the case) and I cant fix it at all. It just doesnt work anymore.

What a pity. Its one of the biggest companies in the world but the app doesnt work for shit.

Good luck anyway...