On my BB 9900 the Facebook chat isn't working - i receive an error. I have the newest application version. Do I have to download something extra? Please help 
First of, kindly add your device info which you can edit in User Control Panel. That way, you can get faster replies related to problems of your device.
Secondly, what seems to be the error message ? Usually, it should goes to Facebook setting which you can edit from PC. Something like a confirmation thingy or other stuff. There you might find what's wrong with the facebook chat. Sorry, I haven't yet faced this particular error since I mostly avoid chatting on my Blackberry Onyx device (I always hide my ass while online on FB)
