When I was trying to install planeshift it said this.
ben@ubuntu:~$ sh /home/ben/PlaneShift_CBV0.3.011.linux.x86-2.run
Creating directory ps.cb.03.011.linux.x86-2
Verifying archive integrity... All good.
Uncompressing Planeshift Crystal Blue Version 3.011 relase 2.....Extraction failed.
Terminated