using XBMC Frodo 12.2 on a raspberry pi with raspbmc. Installation of facebook media went totally fine. First installed version 0.8.2 through superrepro and did an upgrade to 0.9.9 as the login didn't work out.
Now when entering username and password the message "argument "line" for method "XBMCAddon::xbmc::Keyboard" ..." appears immediately and addon is stopped right after.