I'm using a Blackberry Curve 8320 from T-Mobile, and for a long while the Facebook for Blackberry application (v 1.2.0) was working just fine.
However, recently it started giving me fatal errors when I performed certain actions, like opening new notifications or messages, or trying to view my friends' status updates or my friend list.
I tried restarting my Curve and deleting the offending notifications, which fixed the problems momentarily, but then they got worse. I uninstalled and re-installed the FB app three times, but each time the problems got progressively worse. After the third reinstall it stopped working altogether. I am able to install the FB app, but I can't run it anymore. I can't even make it to the login screen anymore because it crashes every time I open the app.
The error I get is "UnsupportedOperationException". In the error log it appears to be accompanied by some other severe UI error. I can post the full error logs here if it helps.