i switched metacity by doing

metacity --replace
i got same error

and then i switched back compiz again

Hi
i use ubuntu gutsy 64
amd x2 4200
6600gt graphics card

I installed Planeshift but i cant run it
when i run psclient i get this error:
psclient:  No 3d driver (iGraphics3D) plugin!
Segmentation fault (core dumped)
erkan@ANDROMEDA:/opt/PlaneShift$

and when i run pssetup i get this error:
WARNING: could not load plugin 'crystalspace.documentsystem.multiplexer'
psclient:  No 3d driver (iGraphics3D) plugin!
Segmentation fault (core dumped)

and updater cant connect mirrors gets 404 error i should give code:
Opening GLX2D
Creating Context
Video driver GL/X version (direct renderer)
Visual ID: 0x0000000000000024, 24bit TrueColor
R8:G8:B8:A8,
level 0, double buffered
NOTIFY: Applied: Broken ATI point sprites (NV)
NOTIFY: OpenGL renderer: GeForce 6600 GT/PCI/SSE2 (vendor: NVIDIA Corporation) version 2.1.1 NVIDIA 100.14.19
NOTIFY: Using windowed mode at resolution 640x480.
NOTIFY: Pixel format: Color: 24 Alpha: 8 Depth: 24 Stencil: 8 AccumColor: 48 AccumAlpha: 16 MultiSamples: 0
NOTIFY: Multisample: disabled
NOTIFY: Using VBO with 64 MB of VBO memory
Initializing...Critical files (<critical>) not found (Server only)
Mounting skin: /planeshift/art/apps.zip
NOTIFY: psUpdaterEngine initialized.
Server error 404 (http://65.90.250.154/~psmirror/psupdater/version.dat)
Server error 404 (http://planeshift.mirror.thumbnail.cz/psupdater/version.dat)
Bad version info in file: /this/updatertemp/mir1.dat
Server error 404 (http://www.psmirror.org/psupdater/version.dat)
Bad version info in file: /this/updatertemp/mir2.dat
Server error 404 (http://laanx.fragnetics.com/updater_hidden/version.dat)
Bad version info in file: /this/updatertemp/backup.dat
Segmentation fault (core dumped)

i installed crystalspace(sudo apt-get install crystalspace) but still not working.
i search internet and forum but i cant find it (similar but not same i think)

can u help me
Thank u....