For the first time in two years, I also had a segfault with the latest Linux graphical installer. ( I have not changed my distro since .017 so not sure what's causing this new problem).
Running the installer in text mode worked for me however and the game runs fine as usual...thanks once more Xordan!
Give it a try....
you@yourdesktop:~$ ./Planeshift_CBV0.3.018.bin --mode text
Edit: Oops, just realized this is an old post, but in case any one else has had trouble with the latest version of the installer I'll let it stand.