Extract this to your half-life or HLDS folder after installing Sven Co-op 4.0b1. The following issues have been fixed in this minor update:

• Fixed minor issue with the new donor feature spawning in walls.
• Some potential crash bugs were fixed for animation code w/ controllers, and the multisource entity’s use function.
• Minor tweak for minigun, fixed crash bug with rendering code.
• Specified shocktrooper’s eye position to a static value to fix some model issues.
• Minor tweak to Tor’s speaking function.
• Fixed Babygarg crash bug when being killed by a Gargantua’s explosion.
• Flesh Gibs now properly float.
• Minor sound engine fixes for sound output.
• Updated FMOD Ex to v4.24 for the new sound engine.
• Crash fix for world-lit particle system objects.
• Gargantuas no longer eat turrets or snarks.
• Added monster_op4loader.
• Minor client-side reloading tweak.
• Removed console command that crashed servers.
• Added opengl mode for env_fog to support Steam Half-Life.
• Added new command: cl_stopsound – Works just like the stopsound command from Half-Life, but works for the Sven Co-op sound engine.