hmmm...yes. every time you alter the map, you have to delete map.rwm from the base folder and, depending on what else you have changed, some of those txt.strings.bin files that appear in the text folder. If you have only added a region or changed a name, you should delete imperial_campaign_regions_and_settlement_names.txt.strings.bin
DO NOT delete imperial_campaign_regions_and_settlement_names.txt
Edit: the log is a text file in the main M2TW folder called "system.log.txt"
Bookmarks