The show err didn't name the reigon, but it did name the line of the file the error is occuring on. As I said, it's the end of the file:
Code:
faction_relationships	romans_julii,		100		romans_brutii
faction_relationships	romans_julii, 		100		romans_scipii
faction_relationships	romans_julii,		100		romans_senate
faction_relationships	romans_julii, 		600		slave
faction_relationships	romans_brutii, 		100		romans_julii
faction_relationships	romans_brutii,		100		romans_scipii
faction_relationships	romans_brutii,		100		romans_senate
faction_relationships	romans_brutii,		600		slave
faction_relationships	romans_scipii,		100		romans_julii
faction_relationships	romans_scipii,		100		romans_brutii
faction_relationships	romans_scipii,		100		romans_senate
faction_relationships	romans_scipii,		600		slave
faction_relationships	macedon,			600		slave
faction_relationships	egypt,			600		slave
faction_relationships	seleucid,			600		slave
faction_relationships	carthage,			600		slave
faction_relationships	parthia,			600		slave
faction_relationships	pontus,			600		slave
faction_relationships	gauls,			600		slave
faction_relationships	germans,			600		slave
faction_relationships	britons,			600		slave
faction_relationships	armenia,			600		slave
faction_relationships	dacia,			600		slave
faction_relationships	greek_cities,		600		slave
faction_relationships	numidia,			600		slave
faction_relationships	scythia,			600		slave
faction_relationships	spain,			600		slave
faction_relationships	thrace,			600		slave
faction_relationships	slave,			600		romans_julii, romans_brutii, romans_scipii, romans_senate, macedon, egypt, seleucid, carthage, parthia, pontus, gauls, germans, britons, armenia, dacia, greek_cities, numidia, scythia, spain, thrace
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; >>>> start of regions section <<<<

               <----------- THIS LINE IS THE ONE WITH THE ERROR ON IT! There are no lines underneath the error line!