First guess is outdated graphics card drivers, although I\'m sure it can be something else. For now, follow the suggestion I have posted to Vicious in the previous thread:
Check what kind of video card you have, whether Nvidia, ATI, etc., and go to the manufacturer\'s website (nvidia.com, ati.com, etc.). Latest drivers are available as a free download. To check what card you have if you are on Windows, simply right-click anywhere on your desktop, hit Properties, find the Settings tab, and check under Display.
*edit* Found another possible solution. I believe you have to edit the file pssetup.cfg in your PlaneShift directory. Try sticking semicolons ( ; ) on the front of the following lines, as so:
System.PlugIns.iVFS = crystalspace.kernel.vfs
System.PlugIns.iGraphics3D = crystalspace.graphics3d.opengl
;System.PlugIns.iSoundRender = crystalspace.sound.render.software
System.Plugins.iDocumentSystem = crystalspace.documentsystem.tinyxml
System.PlugIns.iImageIO = crystalspace.graphic.image.io.multiplexer
;System.PlugIns.iSoundLoader.WAV = crystalspace.sound.loader.wav
;System.PlugIns.iSoundLoader.OGG = crystalspace.sound.loader.ogg
;System.PlugIns.iSoundLoader = crystalspace.sound.loader.multiplexer
Then save, and run the setup again.