The files that are read to create maps do not cause errors in PBW games. SystemTypes.txt is one such file. You can change it all you like, and will get no data errors for PBW games. Same with QuadrantTypes.txt and StellarAbilityTypes.txt. PlantType.txt and SectType.txt are read continuously though, so you don't want to change those arbitrarily. This is why FQM Standard is possible, by the way.
[ December 28, 2003, 23:02: Message edited by: Imperator Fyron ]