I am unable to enter any town besides Arroyo in Fallout 2. I try to get in to Klamath, from the world map, but It doesn't register. I am pressing the town/world button, but it only works when i am over arroyo. any suggestions/ hints would be greatly appreciated.

thanks, i couldn't for the life of me figure this out,

You're welcome, to my shame I did the trip between Arroyo and Klamath many times trying to figure out this one too ;).
( my character must be 70yo now with all the time I wasted waking back and forth :))