Whenever I put the latest (v2.2.0) mod file in the mods folder, the launcher, instead of loading the game, gives an error (An unexpected issue occured and the game has crashed. We're sorry for the inconvenience. Exit code: 0). I have other mods installed, including Tactical Fishing, but it's not the source of the crash (I just tested it).

My best guess, with what you said. Is that either you have a version of Forge that´s older than 37.0.8.
Or would you happen to have Biomes O´ Plenty installed?

Please provide the crashlog.

I have Biomes O'Plenty installed and my Forge version is 37.0.12

Make sure you´re using Biomes o Plenty version 14.0.0.13 or newer

I'm using Biomes O'Plenty version 14.0.0.14

Sorry, it took me a while to locate the crashlog
crash-2021-07-28_19.25.17-fml.txt

The issue is on BoPs side. The problem is that I require a specific version (or newer) of BoP. But their version internally is just set to "1", which can´t really be used for much. I´ll release a new version without the check.

Thank you, it's working now