Just tested Hedgewars 0.9.9 for the first time. It initially seems to work fine, is smooth and looks very nice (!) (except for the always crackling SDL-audio, which is a problem with many SDL-games). But, whenever an explosion happens (like rocket launcher), the game craps out (back to frontend launcher app). The first time this happened (with 1280x1024 resolution), the error message was something like "Could not init engine: something path to some lib", but this message hasn't appeared on sub-sequent crashes, even though I've also cleared out ~/.hedgewars.
ATI X1400 Radeon Mobile (128MB VRAM)
ATI Catalyst fglrx 8.12 (latest)
GLX info here: http://folk.uio.no/oyvinst/glxinfo-b.txt
Hedgewars-0.9.9 packages compiled by getdeb.net.
Many other OpenGL-games work just fine on this machine, as well as OpenGL screensavers, etc.
I might be able to assist in getting some debug output. Is this a known problem ?
EDIT: This problem is NOT related to graphics/OpenGL.