Can't find a suitable visual

[kamax]

Hello,

I have installed ubuntu 11.10 and can't get regnum to start...
I write my login, click ok and the login window dissapear and nothing.
The CPU works around 1min and go back to doing nothing.

The log.txt:

[06/04/2012 18:10:21] [RenderizerGL][renderizer_gl_x11.cpp(224)] X Server vendor: The X.Org Foundation
[06/04/2012 18:10:21] [RenderizerGL][renderizer_gl_x11.cpp(228)] X Server release: 1.10.4
[06/04/2012 18:10:21] [RenderizerGL][renderizer_gl.cpp(363)] XVidMode Extension version 2.2
[06/04/2012 18:10:21] [RenderizerGL][renderizer_gl.cpp(373)] Xinerama Extension version 1.1
[06/04/2012 18:10:21] [logger.cpp(72)] Can't find a suitable visual
[06/04/2012 18:11:18] [EntityManagerEntity][entity_manager_entity.cpp(111)] Entities not responding to shutdown signal: 
[06/04/2012 18:11:18] [EntityManagerEntity][entity_manager_entity.cpp(117)] display(0)
[06/04/2012 18:11:18] [EntityManagerEntity][entity_manager_entity.cpp(117)] error_report(0)
[06/04/2012 18:11:18] [EntityManagerEntity][entity_manager_entity.cpp(117)] entity_manager(0)
[06/04/2012 18:11:18] [EntitySystem][entity_system.cpp(94)] Forcing shutdown.
[06/04/2012 18:11:18] [EntitySystem][entity_system.cpp(100)] Entity system ready to shutdown
[06/04/2012 18:11:18] [Game][game_client.cpp(823)] Exiting Game

I have tested with unity 2D but most of the time i use the "fallback" session with "Ubuntu no effects". I suppose compiz is off.

glxinfo | grep OpenGL:

OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce 8600 GT/PCI/SSE2
OpenGL version string: 3.3.0 NVIDIA 280.13
OpenGL shading language version string: 3.30 NVIDIA via Cg compiler
OpenGL extensions:

direct rendering: Yes

Does someone know where the problem is ?