I get the same ParticleVertex::Fill stack trace as above, in this game and Stacking. Running Kubuntu 12.04 on a Thinkpad T500 using the integrated Intel graphics with mesa drivers. I used driconf to enable s3tc compression with libtxc. Kernel: Graphics card: Linking: glxinfo snippet with mesa-utils:i386: It crashes in the same spot under Steam, so I assume it's the same problem although I'm not sure how to get the stack trace in that case. I assume Xorg.0.log info is not useful since it will be the 64-bit drivers, but if there's other information I can provide please let me know.