Solved: Reinstall Facebook that was removed using N9QT
 

So I uninstalled Facebook using tweak QQ.
All the packages uninstalled successfully except libqt-facebook, which errored out with /etc/ld.so.cache: permission denied error

I'm now trying to reinstall using QQ restore and while the message is that FB installed successfully, I don't see it installed.

What am I doing wrong ??

EDIT:
Reinstalled Facebookqml using dpkg --reinstall option