I am having some absolutely impossible to understand issues with my mod.
It seems to me like changes are implemented or not implemented pretty much at random. Changes to districts, for example, are working fine, whether they're cost updates or additional benefits. Similarly, some cost changes to buildings (e.g. Art Museum) are working fine, while others (e.g. Zoo) don't work at all, and where the cost changes to e.g. the Archaeologist are present, nothing I do seems to affect the ranged strength of the Saka Horse Archer.
They can't be syntax issues, as I've checked and re-checked the syntax at least a dozen times by now, and even went through the effort of copy-pasting the syntax from elements I knew were working, and I am completely at a loss what the non-functional changes may have in common.
Possibly of note: I created most of this mod back in March 2022. At the time, I did not notice any issues with it, although it's possible that I just didn't realize some building cost adjustments weren't going through. I then didn't work on it until recently (last week or two), where I first couldn't get the Saka Horse Archer change to work, and now can't get any changes to the Zoo to work. However, it can't just be a matter of not properly updating the mod, as I could add a change to the cost of a Warrior just fine, and my adjustments to the Aqueduct and Sewer are also present in-game.
I'm running the mod without any other mods active, and I even tried disabling all DLCs (except Gathering Storm, which is a requirement for the mod and is supposed to always load before it as a result), but that didn't resolve things either.
Does anyone have any ideas on what else could be the cause?
EDIT: In addition to the above, I have now found (at least) one change that is not functional, when I know it was previously functional. I have checked, and yes, the mod is listed as active.
EDIT2: Welp, I figured it out. Some syntax that I believed was correct was in fact not correct, and the game would stop reading the mod's files after that line.