Epsiode 1 contains two planets, Corellia and Nar shaddaa.
The biggest changes would be changing the pacing of the main quest a few times which can be time consuming.
Romance is planned to be in the mod but dont expect to romance like in mass effect games.
That Conversation Node Error thing sounds like you have the game installed as a language other than English... K1R is only English at the moment.
As to your issue here, that could be related, but if you have a save from before going to the swoop track, try deleting the tar_m03af.mod from your modules folder and then trying the swoop track. If that still fails, try warping to tar_m03mg to do the race.