Error: File Name doesn't exist

[TheMadOne]

Hello guys, I have a question:

When I made my tweaking using mod switch in my mod folder, I have a problem in the models_building folder, says that Error: File Name doesn't exist... So first I tried using the PAK Extractor to extract the said files so that I can make the proper file path like in descr_model_battle, so I change the file path to my_mod/data/models_unit/unit_roman_arcanii_lowest.cas, max etc.., but there are no such files only .tga no .cas files. All my battles when I attack a settlement, it is just empty with only the ground.. So how do I solve this problem?

Thank you