Check the game play bug section of the forum, there are posts and a possible work a round posted there. It looks like Cryptic released a bug to the live server again today (it wasn't the only one either).
I cannot load ANY of my bridge officers on my Jemhadar Dreadnaught, none will apply at all, no matter what I try, and I've tried the equip another ship go back to this one trick, tried it in space, ground, nothing works.
"Would you mind not standing on my chest? My hat's on fire." - The Doctor