really odd bug you have. I have done this mission countless times and never had a problem with it. I scan the Male officer then the female officer than talk to McCoy for caibration: -70, +30 then the interior/exterior option and i'm off to the next phase before he even tries it. I've never been stopped or had to go back down to talk to him. Oh sometimes he gets away from you but i've never had him not accept my solution (once i figured it out).

Weird 'Bones' said i didn't work but i just noticed the list of things you need to do is now green for 'Help McCoy Pioneer a Neural Rejuvenation Procedure' and McCoy walked away.
I guess this means it's bugged for what McCoy says but works anyway. Strange bug.

nah, not working what ever I do ... Doctor is just kneeling down and not reacting to anything I do, so that is 3 quest parts locked and can`t complete them coz of doctor ... nice.

I just completd this quest last night and had the same bug: when you have to give McCoy the calculations to heal the personel. The problem is when you try to give McCoy the calculation while he is back to the spot when you first entered the door kneeling at the crew member. You give McCoy the correct reading and nothing happenes.

I followed the suggestion listed in this post how to complete this part. You have to give the calculations to McCoy while he is still walking around. So you have to be fast to scan the 2 other crew members to get the correct calculation, also have to click thur all the choices after you scan them. To get McCoy to reset I had to beam out, it put me back to the 24th century station's maintenance lift. Click on the maintenance lift and it put me back at the respawn point where I have to walk up the ramps and walk in on McCoy kneeled down to the crew member in the middle of the floor. Clicked on McCoy and the same part started over again and was able to complete it.

yeah, done the same - logged off, done it the next day, quick to do those few things to get to Doctor part, talk to him when walking around etc. as some1 said above - and all works ... I think it would be decent of some1 to CHANGE THAT if possible, instead of mostly every1 having same problems on it for no reason when 1st time doing it ...