For those having [problems running the mod with modmanager, here is an alternative.
Go to C:\Users\(yourusernamehere)\AppData\Roaming\The Creative Assembly\Empire\scripts and delete all the files except user.empire_script. Then open user.empire_script and edit it so it says the following. and then save.
mod "new.pack";
mod "Col_models.pack";
mod "Col_ui.pack";
mod "Colo_events.pack";
Then run ETW through Steam as normal WITHOUT Modmanager.