Functional Seaports Won't Upgrade

[arsenal4me 9]

Hey ST guys and gals, I've been using the BSC functional seaports for a while now. Recently though, the ports stopped upgrading. Instead, they'll max out capacity then turn dilapidated. Just to make sure I just wasn't using the seaports enough, I went to my all-industrial city with 43k jobs and a stage 6 seaport, deleted the seaport, took away almost all the road connections (to drive even more traffic to the port), then plopped a new port. I ran the game for over a year and the port maxed out its usage at stage 1, became dilapidated, and never upgraded.

Since this is a new problem, I realized the issue is likely to be a plugin I've recently downloaded. I had just got the CAMpatible Industrial Revolution mod, so that seemed the most obvious culprit. But when I deleted it and went back to the game, still no upgrading. Between when I caught this problem and the last time I saw a functional port upgrading, I also downloaded a few power plants, a military water tower, the SNM military lots (not the naval lots though since I already had those), riprap's seawall, and PEG's CDK leveler. It would take quite some effort to individually delete each lot then recheck the game, and I don't think any of those could be causing the issue anyway.

Any ideas? Thanks everyone.