And before run the game, to not forget to DELETE the following 3 files:
map.rwm & map_heights.hgt in \data\world\maps\base folder,
and
imperial_campaign_regions_and_settlement_names.txt .strings.bin in \data\text folder.

(don't worry about the 3 deleted files, the game will regenerate new map.rwm and imperial_campaign_regions_and_settlement_names.txt .strings.bin files, based on your last changes.)

Play the game and voila!
by my reckoning that would cause a straight crash! Deletion of heights HGT will cause 3 errors unless you amend heights.tga to change the 0,0,0 pixels to 1,1,1.

The .bin file will regenerate from the imperial_campaign_regions_and_settlement_names.txt file which is the one that needs to be edited. There is actually no need to delete the .bin version.