[Executor]

The mod DM file contains all the 9 nations, which in this case have been moved to MA for the purpose of the game. Simply turning off the mod does nothing, nor it should return the nations to their eras.
If you want them in their original setting, EA, MA or LA, you either have to use the original nation pack 2 in where some nations remain EA and LA and therefor can't be all used simultaneously (which is why we transferred them to MA all), or, download individual nations from the MC compatibility mod.
As for CBM 1.84, I'm not sure, maybe it adds some new mods that combined with the nation pack go over the total sprites limit. There are only so many mods that can be used together.