I can run freeview using my current install on Mountain Lion, however when I run tkmedit or tksurfer I get the following error:

GLUT: Fatal Error in tksurfer.bin: could not open display: :0.0

my /etc/profile has the setting export DISPLAY=:0.0  for a different program. Is there settings I should add / change to allow tkmedit or tksurfer to run?

Thanks!

Sal