Compact freight lift doesn't work

[007FFF]

After referencing some guides to ensure I'm not being a moron it appears that the compact freight lift in Tau isn't working for me.

I've placed the ARK on it, but I can't call it down or do anything else. A sound effect plays and the room shakes in the Dive Room, but that's it. The ARK remains on the upper floor.

I haven't tried going back to an older save, I'm about to do that now. I imagine this will resolve the problem and the cause is a misfiring trigger event or something. I went down to the Dive Room before finding the ARK and starting clicking on all the interactive things.. Maybe doing things in an incorrect order have caused a problem.