I used the NOGRP crack from GCW with the English version of the game:
http://wiretarget.com/games/pc_sw_kn...public_2.shtml
Travelling to other planets is no problem for me, you just click on the Galaxy Map, click the planet you want to go to and click Travel. If you can't go to a planet the game tells you why. I'm well into the game so it's not a crack problem!