I downloaded The Orange Box off Steam and everything works fine apart form Half Life 2 and Half Life 2 : Lost Coast. Does anyone know why this might be? I am running 64-bit vista. When I load the games it simply enters a blurred screen and says 64-bit mode activated. Then nothing happens......
Well, Valve are working on it, as I write no doubt.
They are constantly improving their games. There were no 64-bit versions of the games (or source engine) when the Orange Box was released. The only reason that the 64-bit versions now exist (and were working up until a patch a few weeks ago) is because Valve wanted to bring performance enhancements to those with 64-bit OS. Like when they added HDR to Counter Strike:Source. They didn't have to, we had already bought the game, but they just wanted to give us a better experience.
And don't worry, their track-record is second-to-one. It will be fixed, and the 32-bit versions are still outstanding.
Good luck with the games, they all absolutely rock. Especially Portal
I have the very same problem, but your solution doesn't work for me. When I open the launch options it says that these are for advanced users only (idk if it always says that).
When I enter "-32bit" anyway and click OK, nothing seems to happen. When I launch the game, it still freezes before properly starting.