Please don't post in the bug reports thread until you're sure it is a bug - try reloading from previous saves etc. The script isn't entirely foolproof and can sometimes break, which a reload from an earlier save can often fix - but it's not that fragile that it will break randomly. Most often it's caused by something the player did at an unfortunate moment. We need to know what you are doing that can consistently reproduce this problem.

You say you cannot dock with the station. Is the game actually preventing you from doing so? E.g. you select mothership, then rightclick on Grid Station. Does the blue docking line not appear? Do you get a message saying anything? When exactly are you attempting to do this, i.e. what is your current quest? What was the last conversation dialog you had, and with whom? This is tied to the previous event with Handers, did you opt to save him or not?