Thanks Alex and everyone for the hard work to keep the site running 
Many thanks to you as well, Casper, for your assistance with getting the LEX back up and running.

And thank you to all of you for your support--it's great to see so many familiar faces back here (I think everyone's probably especially happy to see you here,
memo--myself very much included), and I hope that the "new" SC4D provides an even better experience for you all.
I did have to uninstall pretty much every mod the forums had been using before, in large part because there were a lot of outdated/ancient things behind the scenes on the "old" SC4D--which still had PHP and SMF components from 8 to 10 years ago (!) under the hood.
The "Like Posts" mod was one of the first things I reinstalled, and it's been here since we've been open again, but for whatever reason, the actual button itself had not been showing up, and multiple attempts at uninstalling and reinstalling the mod were not successful in addressing that. For whatever reason, the mod wasn't installing its hooks into the theme we're using, but I was able to locate what I needed to add, and do things manually, so it should be working once again.
The other reputation system we were using, the karma points, is presently a bit barebones at the moment as well, as there's been some issues with the Karma Description mod that had been previously in use. I will continue looking into it, however.
Being that I have full access over the back end of the site now--and the process of getting this place back up and running forced me to learn a lot of new technical things--the turnaround on forum features and issues should be a lot quicker than it was over the past several years.
Also, regarding David, his family is also posting updates on his condition
here.
-Alex