Launched eternity $ eternity -iwad ~/.src/freedoom/wads/freedoom1.wad -skill 2 -warp 4 1 Saved games and quit. Opened same wad and map in Slade3 and Eureka, did not save. While Slade3 and Eureka are still open, I ran original command to launch eternity: $ eternity -iwad ~/.src/freedoom/wads/freedoom1.wad -skill 2 -warp 4 1 Then hit F3 to load game. Segmentation fault Close Slade3 and Eureka. Iwad has old timestamp. Feb 28 12:54 Eternity still segfaults.