If your Facebook app is crashing after the iOS 6.0.1 update, you’re not alone: it’s crashing for loads of other users too.
The problem, however, isn’t necessarily iOS 6.0.1. Some Twitter users are reporting that the app is crashing on them, even without upgrading to iOS 6.0.1. Deleting the app and reinstalling it or rebooting your device doesn’t seem to fix the issue.
In short, the problem seems to be something on Facebook’s end that can be fixed without issuing an app update. Just be patient, and in the meantime, log-in to Facebook using Mobile Safari.