Porting a Mod to Rome Remastered
Before trying to get your actual mod into RR try setting up a new modfolder copying in the map files from BI and make a small change e.g. to the playable/non-playable list of factions so you can see if that change has worked and game will load.
Temporary issues with Barbarian Invasion
Using Barbarian Invasion currently gives a -show_err messages on exit about wardogs, and then hounds, these can mask other more useful messages, to fix this (until Feral do), include a version of the RR descr_animals.txt file with the following sections added, these are just duplicates of the existing entries with the plural name:
type wardogs class wardog model wardog radius 0.75 x_radius 0.35 height 1.0 width 1.7 offset 1.0 mass 1.0 type hounds class hound model hound radius 0.75 x_radius 0.35 height 1.0 width 1.7 offset 1.0 mass 1.0
After these you get an error about line 15689 in bi/data/export_descr_character_traits.txt, copy that file into the mod folder and comment out the trigger referencing the Law building type.
After fixing those issues you should start to get -show_err messages about problems in your mod (if you have any)