Forum:Caesar disappering?

hey, I was at the fort a while back and i decided to kill Caesar... well... i killed everyone apart from the praetorian guards so I fast traveled to Novac and got Boone (i wasn't in tent when I fast traveled) and then when I got back to the fort i managed to kill all the praetorian guards but i couldn't find Caesar. I thought that Boone or Rex got him but i couldn't find him anywhere!!!! I searched through the whole of fortification hill and I still couldn't find him. HELP! is it a bug that can be fixed? so annoyed.. (trying to get history points for Boone's quest) :S

thanks,

Sam