Hi, I know the origin of this bug when using OpenGL mode : not enough memory. I think that Wormux use to much memory. I know that Wormux keep a copy of the map and the sky, but that's not needed. It just speed up map reloading.
Bye, Haypo -- Victor STINNER, étudiant à l'UTBM http://www.wormux.org/fr/ : Jeu libre dont je participe au développement