We have released a Beta update for Half-Life: Opposing Force. Changes in this update are:

• Don't show the full loading dialog when changing level in a single player game
• Fix up a couple friendly names used for saves
• Don't cause a process exit if winsock returns WSAENETRESET
• For r_drawentities to 0 when running sv_cheats 0 in software mode, to match hardware behaviors
• Fixed corrupt model previews in Multiplayer options dialog