Tomsta

Ok so this is like my 11th time playing the game however it's been a while since i've played the game i'm on the ravenger and have done everything i've killed Nilhius (or however you spell his name) got the new proton core from the missile, however when i go to any of the 'Bomb Sites' nothing happens, i've serached through my inventory to see if i could set the core manually and nothing ... Is this a bug or am i just being stupid ...