rpfm VS UnityExplorer

Learn to mod, that's easily doable with RPFM: https://github.com/Frodo45127/rpfm.

RPFM (modding tool for total war games) accessing the game's database https://github.com/Frodo45127/rpfm

The only thing I can think of is that it was saved as a movie pack (which is generally bad practice). That is a trick that some people use to forcibly override other mods. You could grab Rusted Pack File Manager and save it as a new mod pack if you want to persist with using it. RPFM is currently pushing betas for the next big update, so I'd stick with an older stable build for now - https://github.com/Frodo45127/rpfm/releases/tag/v3.0.16

I see I will need to look up a tutorial on this program then. Does this download link seem right? https://github.com/Frodo45127/rpfm

I'd suggest replacing the old packfilemanager by the standard modding tool everyone uses today https://github.com/Frodo45127/rpfm

Open the file with rusted pack file manager (RPFM) https://github.com/Frodo45127/rpfm . DO ALL THE IMPORTANT STUFF LIKE Chose the path + chose the Game before opening file, also download the other two files I forgot the name of. But very important. It prompts you at the beginning. So it's quite helpful.

And the second tip: pick up one of these basic mods to serve as a dumpster (in the good sense). For example, I am the creator of the beastmen rebels mod, I did it not only because I wanted to share with the community and blablabla... there is actually a second reason, in "secret" I used this mod to unload everything else that felt minor and inconsequential (or simply mods that I want to backup), merging everything into one big ass file, that way you can extrapolate the mod limit and keep things more organized at the same time. By using the RPFM, you can easily merge mods as much as you want, it's really easy. So, if the game is getting unstable and you have a lot of minor mods taking up space, merge everything and organize the madness. Back in Warhammer 2, I subscribed to 150 mods and I had another 15 mods merged into the beastmen rebels. Creative Assembly is like the poor cousins of Bethesda, their games need mods to be playable and fun, it's a necessity

If you want to edit and create mods, grab RPFM and peruse some guides in the Modding Den Discord. A lot of Total War modding ultimately boils down to spreadsheet editing, but even that can get pretty complex when you start dealing with multiple levels of cross-table references. And then there are script-based mods, which require knowledge of Lua, and various model and texture edits which are a whole other skillset (and tool chain).

some reading to create a mod with RPFM : https://tw-modding.com/index.php/Tutorial:RPFM_For_Dummies#Chapter_3_-_Making_a_Mod

You get this handy tool. Make a new packfile (ctrl+n), right click on the new unknown.pack > add > add from packfile, and add the .pack for the mod you want. It should open in a tab like this. Double click on that pack (the line highlighted in the image) and you should see its stuff get added to the list on the left. Do that for every mod you want in the pack, then save the packfile. Give it a name without any spaces. Put that .pack in Steam\steamapps\common\Total War WARHAMMER III\data.

I'm unsure if you're thinking of the mono features for Unity games, that come up when a unity game uses Mono (when CE is attached) or if you're referring to UnityExplorer

It only took 250+ days... Most of the stuff works, BG Viewer doesn't, Animation Viewer doesn't appear to have any code, EventViewer is mostly stripped, FlagViewer partially reimplented, motion folder is synthetically populated for BustShotViewer to work, Debug is jank. You still have to use something external like UnityExplorer (fork I used, iirc).

Download and copy over the universal mod: https://github.com/sinai-dev/UnityExplorer

I tried using https://github.com/sinai-dev/UnityExplorer/

First download from here: https://github.com/sinai-dev/UnityExplorer/releases/tag/3.1.7 it is: UnityExplorer.BepInEx.Mono.zip