Grid is unlikely to be changed much at this point. Phanx has taken over as the maintainer, while the original developer works on other addons. Phanx is a fantastic addon author, but from what I've seen, when an addon does everything it should reasonably need to do, it stops "growing". Grid is most definitely at this stage.
If you were using any extra plugins, then chances are some are no longer loaded because they are "out of date".
Any game patch, even minor ones will toggle that setting off annoyingly.
And it's actually fairly possible that even if you have "load out of date addons" checked that many of your grid plugins won't load - many of them require Ace2, but didn't have it embedded, because Grid had Ace2 embedded. Grid is now Ace3 instead of Ace2, and so unless you have another addon with embedded Ace2, the plugins that rely on Ace2 won't work.