I have a small problem that I can't solve, during the mission "Taking Independence" when I am about to attack castle, Preston is stuck and unable to move. This had cause me to basically abandon the mission as when I attack the fort he will still be in the café telling me we have to attack, even though I have cleared it of all enemies and eggs. I have reload all my save from within a hour but that still do nothing to solve it.

To be fair this hasn't been my only problem with him, during the time where I could first recruit him, he wouldn't move and just sit back and watch me get destroyed.