I recommend removing the cruise assist module and then re-installing it. This has caused it to resume function for me - if not for long...
Almost new year and FD did not fix.
Having used an ASP, Krait Phantom and Anaconda for some shorter trips in the last few weeks, I can say, that it works reliably on my ASP.
On the Krait, it was working initially, when I fitted it (about 2 weeks ago) and by now, its not functional anymore.
On the Anaconda, which needs it the most, It worked for about 2 days after I first installed it, then it stopped.
Uninstalling and reinstalling the
What I make out of this is, that its not a plain jane game-wide malfunction, but one caused by some intractable things related to modules and ships.